Take Inventory ofTake Inventory of Your Genetic TraitsYour Genetic Traits
bullHumans have 46 chromosomes in the nucleus of every cell 23 from each parent
bullEach chromosome consists of very tightly packed double helix DNA
bullGenes are stretches of DNA found on chromosomes
bullEach gene codes for a different physical trait
bullThe genes you inherit from your parents determine your physical traits
bullGenes and traits are considered dominant or recessive although in some cases it is not always clear
bullDominant traits occur when only one copy of the dominant gene is inherited
bullRecessive traits are usually rare because you need to inherit a recessive gene from both parents
Male or Female
Male (XY) Female (XX) bull Your sex is determined by whether
you get an X or Y chromosome from your father Everyone receives an X from their mother
Earlobes
bull Detached earlobes are believed to be dominant but more than one gene may be involved
bull Attached earlobes are considered recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Tongue Rolling bull Rolling bull Non-rolling
bull Rolling is thought to be bull Non-rolling is dominant but identical thought to be twin studies have cast recessive doubt on this observation
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Ear Wiggling Ear wiggling may be connected to tongue rolling in males
bull Can move ears = bull Canrsquot move ears = Dominant (although Recessive this may be variable)
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
bullHumans have 46 chromosomes in the nucleus of every cell 23 from each parent
bullEach chromosome consists of very tightly packed double helix DNA
bullGenes are stretches of DNA found on chromosomes
bullEach gene codes for a different physical trait
bullThe genes you inherit from your parents determine your physical traits
bullGenes and traits are considered dominant or recessive although in some cases it is not always clear
bullDominant traits occur when only one copy of the dominant gene is inherited
bullRecessive traits are usually rare because you need to inherit a recessive gene from both parents
Male or Female
Male (XY) Female (XX) bull Your sex is determined by whether
you get an X or Y chromosome from your father Everyone receives an X from their mother
Earlobes
bull Detached earlobes are believed to be dominant but more than one gene may be involved
bull Attached earlobes are considered recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Tongue Rolling bull Rolling bull Non-rolling
bull Rolling is thought to be bull Non-rolling is dominant but identical thought to be twin studies have cast recessive doubt on this observation
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Ear Wiggling Ear wiggling may be connected to tongue rolling in males
bull Can move ears = bull Canrsquot move ears = Dominant (although Recessive this may be variable)
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
bullGenes are stretches of DNA found on chromosomes
bullEach gene codes for a different physical trait
bullThe genes you inherit from your parents determine your physical traits
bullGenes and traits are considered dominant or recessive although in some cases it is not always clear
bullDominant traits occur when only one copy of the dominant gene is inherited
bullRecessive traits are usually rare because you need to inherit a recessive gene from both parents
Male or Female
Male (XY) Female (XX) bull Your sex is determined by whether
you get an X or Y chromosome from your father Everyone receives an X from their mother
Earlobes
bull Detached earlobes are believed to be dominant but more than one gene may be involved
bull Attached earlobes are considered recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Tongue Rolling bull Rolling bull Non-rolling
bull Rolling is thought to be bull Non-rolling is dominant but identical thought to be twin studies have cast recessive doubt on this observation
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Ear Wiggling Ear wiggling may be connected to tongue rolling in males
bull Can move ears = bull Canrsquot move ears = Dominant (although Recessive this may be variable)
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
bullThe genes you inherit from your parents determine your physical traits
bullGenes and traits are considered dominant or recessive although in some cases it is not always clear
bullDominant traits occur when only one copy of the dominant gene is inherited
bullRecessive traits are usually rare because you need to inherit a recessive gene from both parents
Male or Female
Male (XY) Female (XX) bull Your sex is determined by whether
you get an X or Y chromosome from your father Everyone receives an X from their mother
Earlobes
bull Detached earlobes are believed to be dominant but more than one gene may be involved
bull Attached earlobes are considered recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Tongue Rolling bull Rolling bull Non-rolling
bull Rolling is thought to be bull Non-rolling is dominant but identical thought to be twin studies have cast recessive doubt on this observation
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Ear Wiggling Ear wiggling may be connected to tongue rolling in males
bull Can move ears = bull Canrsquot move ears = Dominant (although Recessive this may be variable)
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
bullDominant traits occur when only one copy of the dominant gene is inherited
bullRecessive traits are usually rare because you need to inherit a recessive gene from both parents
Male or Female
Male (XY) Female (XX) bull Your sex is determined by whether
you get an X or Y chromosome from your father Everyone receives an X from their mother
Earlobes
bull Detached earlobes are believed to be dominant but more than one gene may be involved
bull Attached earlobes are considered recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Tongue Rolling bull Rolling bull Non-rolling
bull Rolling is thought to be bull Non-rolling is dominant but identical thought to be twin studies have cast recessive doubt on this observation
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Ear Wiggling Ear wiggling may be connected to tongue rolling in males
bull Can move ears = bull Canrsquot move ears = Dominant (although Recessive this may be variable)
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Male or Female
Male (XY) Female (XX) bull Your sex is determined by whether
you get an X or Y chromosome from your father Everyone receives an X from their mother
Earlobes
bull Detached earlobes are believed to be dominant but more than one gene may be involved
bull Attached earlobes are considered recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Tongue Rolling bull Rolling bull Non-rolling
bull Rolling is thought to be bull Non-rolling is dominant but identical thought to be twin studies have cast recessive doubt on this observation
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Ear Wiggling Ear wiggling may be connected to tongue rolling in males
bull Can move ears = bull Canrsquot move ears = Dominant (although Recessive this may be variable)
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Earlobes
bull Detached earlobes are believed to be dominant but more than one gene may be involved
bull Attached earlobes are considered recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Tongue Rolling bull Rolling bull Non-rolling
bull Rolling is thought to be bull Non-rolling is dominant but identical thought to be twin studies have cast recessive doubt on this observation
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Ear Wiggling Ear wiggling may be connected to tongue rolling in males
bull Can move ears = bull Canrsquot move ears = Dominant (although Recessive this may be variable)
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Tongue Rolling bull Rolling bull Non-rolling
bull Rolling is thought to be bull Non-rolling is dominant but identical thought to be twin studies have cast recessive doubt on this observation
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Ear Wiggling Ear wiggling may be connected to tongue rolling in males
bull Can move ears = bull Canrsquot move ears = Dominant (although Recessive this may be variable)
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Ear Wiggling Ear wiggling may be connected to tongue rolling in males
bull Can move ears = bull Canrsquot move ears = Dominant (although Recessive this may be variable)
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Dimples
bull Dimples are thought to be dominant
bull No dimples is recessive
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Hand Clasping Hand clasping is believed to be determined by genetic factors
although it is unclear if one trait is dominant over the other
bull Left Thumb on Top bull Right Thumb on Top
bull 55 of people bull 44 place their place their left right thumb on top thumb on top
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Cleft Chin
bull Cleft chins are bull No cleft is dominant although recessive
variable penetrance may influence
Department of Genetics Stanford University expression httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Widowrsquos Peak
bull A widowrsquos peak bull No widowrsquos peak is hairline is considered considered recessive dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Hair on Middle Segment of Finger
bull Hair bull No Hair
bull The presence of bull No hair is recessive hair on the middle segment of any finger is dominant
httpwwwncbinlmnihgoventrezqueryfcgidb=OMIM
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Phenylthiocarbamide (PTC) Tasting
PTC is a bitter flavor compound that often causes people to dislike certain foods such as broccoli coffee or beer
bull PTC tasting is dominant bull Non-tasting is recessive
bull 75 of individuals can bull 25 of individuals find taste the bitter flavor of the paper tasteless PTC
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg
Image Sources
Chromosomes and Genes The National Human Genome Research Institute wwwgenomegov Genes and Inherited Traits Pearson Education wwwpearsonedcom DominantRecessive Traits Cooperative Research Centre wwwgenecrcorg Male or Female The National Human Genome Research Institute wwwgenomegov Earlobes Windows to the Universe wwwwindowsucaredu Tongue Rolling Hand Clasping Genetic Science Learning Center at the Univ of Utah gslcgeneticsutahedu Ear Wiggling Dimples Cleft Chin Widowrsquos Peak amp PTC Tasting Microsoft Word Clip Art officemicrosoftcomclipart Hair on Middle Segment of Finger Koshland Science Museum wwwkoshlandscienceorg