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GeneticsGenetics

Final Jeopardy

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Gregor Mendel

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Punnett Squares & Probability

Terminology Misc. Misc.

Gregor Mendel 100

• Mendel worked with these to study genetics.

Gregor Mendel 100

• What are pea plants?

Gregor Mendel200

• Mendel started his experiments with this kind of pea plant (Hint:not a trait) that always produced offspring with the same form of a trait as the parent.

Gregor Mendel200

• What is purebred or homozygous?

Gregor Mendel300

• The factors that control traits

Gregor Mendel300

• What are genes?

Gregor Mendel400

• The different forms of genes.

Gregor Mendel400

• What are alleles?

Gregor Mendel500

• This allele’s trait always shows up in the organism when it is present.

Gregor Mendel500

What are dominant alleles?

Genetics Terminology 100

• An organism with two different alleles for a trait

Genetics Terminology 100

• What is a hybrid or heterozygous?

Genetics Terminology 200

• Another word for purebred

Genetics Terminology 200

• What is homozygous?

Genetics Terminology 300

• The meaning of the notation Hh in terms of alleles

Genetics Terminology 300

• What is heterozygous or 1 dominant and 1 recessive allele?

Genetics Terminology 400

• An organism’s genetic makeup

Genetics Terminology 400

• What is genotype?

Genetics Terminology 500

• An organism’s physical appearance.

Genetics Terminology 500

• What is phenotype?

Misc. 100

• For which people is Cc the most probable genotype?

cleft Grandmother

No cleft Grandfather

Cleft Father No cleft

Mother

CleftSonNo cleft

Daughter 2No cleft Daughter 1

The pedigree chart below show the inheritance of cleft chins in humans over 3 generations. The gene for cleft chin (C) is dominant over no cleft (c).

Misc 100

• Who are Grandmother, Father, and Son?

Misc. 200

• What is the genotype of the mother?

cleft Grandmother

No cleft Grandfather

Cleft Father No cleft

Mother

CleftSonNo cleft

Daughter 2No cleft Daughter 1

The pedigree chart below show the inheritance of cleft chins in humans over 3 generations. The gene for cleft chin (C) is dominant over no cleft (c).

Misc 200

• What is cc?

Genetic Disorders300

• A child is born with Down syndrome. What is the most likely cause?

A. The child was involved in a car accident causing brain damage.

B. The child smokes and drinks a lot at a young age and catches Down syndrome because of the unhealthy lifestyle.

C. A genetic mutation on the 21st chromosome occurred in the sex cells of one of the parents during meiosis.

D. A genetic mutation on the 21st chromosome occurred in the cells of the child during mitosis.

Genetic Disorders 300

C. A genetic mutation on the 21st chromosome occurred in the sex cells of one of the parents during meiosis.

Misc 400

I found hair from a student on a desk, examined the chromosomes and found that the 23rd chromosome pair was XY! This tells me that, the student is a ___________.

Misc 400

• What is a male?

Misc 500

• A person who has one recessive allele for a trait and one dominant allele.

Misc.500

• What is Heterozygous, hybrid and also a carrier of the recessive allelle?

Misc 100

• Are the short-haired cats in the F generation purebred or hybrid?

Misc 100

• What is hybrid?

Misc 200

• Is the short-haired cat in the P generation purebred or hybrid?

Misc 200

• What is hybrid?

Misc 300• Look at the pictures

carefully!• What are the possible

combinations of alleles the parent can pass to the offspring in the F 1 Generation?

Misc 300

• What are TG or tg?

Misc 400

Look at the pictures carefully!Which genotypes would result in a tall plant with yellow pods?

Misc 400

• What are TTgg or Ttgg?

Misc 500

Look at the pictures carefully!What is the phenotype of ttGg?

Misc 500

• What is short plant with green pods?

Punnett Squares and Probability 100

• Draw a punnett square to show the cross of a homozygous yellow seed color pea plant (gg) and a heterozygous green seed color pea plant (Gg)

Punnett Squares and Probability 100

g g

G Gg Gg

g gg gg

Punnett Squares and Probability 200

• The percentage of all possible genotypes when a heterozygous smooth pea plant (Ss) is crossed with a another heterozygous pea plant. Smooth is dominant over wrinkled.

Punnett Squares and Probability 200

• What is 25% homozygous smooth (SS)

• What is 50% heterozygous smooth (Ss)

• What is 25% homozygous pinched (ss)

Punnett Squares and Probability 300

• The percent of guinea pigs with the black phenotype when a heterozygous black guinea pig is crossed with a white guinea pig. Black (B) is dominant over white (b) in guinea pigs.

Punnett Squares and Probability 300

• What is 50%?

Punnett Squares and Probability400

• The genotypes of the parents when a spotted rabbit is crossed with a solid-colored rabbit and all offspring have spotted coats. (The spotted coat allele is dominant over the solid-colored allele.)

Punnett Squares and Probability 400

• What are homozygous dominant and homozygous recessive.

Punnett Squares and Probability 500

• The reason why Punnett Squares are useful to geneticisits.

Punnett Squares and Probability 500

• They show the possible outcomes of a genetic cross.

Final JeopardyA genetic counselor has gathered the following information. *Bob and Helen have 3 children.*Bob and Helen have 1 son who has albinism, an inherited

condition in which the skin does not have brown pigments.*Bob and Helen have another son and 1 daughter who do

NOT have albinism.*Neither Bob nor Helen has albinism.*Albinism is neither sex-linked(only found on the sex

chromosomes X orY), nor co-dominant.Is albinism controlled by a dominant allele or by a recessive

allele?

Final Jeopardy

• Recessive• 25% chance they would have

another child with the trait