Welcome to Welcome to Jeopardy!Jeopardy!

Today’s Topic:Today’s Topic:GeneticsGenetics

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Ms. IngsMs. Ings

If a boy is colorblind, he If a boy is colorblind, he inherited it from…inherited it from…

• A) His mother• B) His father• C) Both his mother and father• D) Unable to determine

Your phenotype is based on Your phenotype is based on

• A) Your DNA• B) Your Genotype• C) Your Environment• D) Both DNA and Environment

If you crossed two If you crossed two heterozygous individuals, their heterozygous individuals, their

offspring would haveoffspring would have

• A) 0% Homozygous recessive• B) 25% Heterozygous• C) 75% Dominant Phenotype• D) 50% Recessive Phenotype

Independent assortment Independent assortment and crossing over increaseand crossing over increase

• A) The number of offspring• B) Genetic Linkage• C) Sex-linked traits• D) Genetic Diversity

Genes located on the X or Y Genes located on the X or Y chromosomes are referred to aschromosomes are referred to as

• A) Alleles• B) Recessive• C) Sex-linked • D) Autosomal

A Red flower is crossed with a A Red flower is crossed with a white flower, the offspring are white flower, the offspring are

pink, this is an example of pink, this is an example of

• A) Co-Dominance• B) Incomplete Dominance• C) Sex-linked • D) Multiple Genes

Using this pedigree, individuals Using this pedigree, individuals with the arrows are with the arrows are

• A) Heterozygous• B) Homozygous Dominant• C) Homozygous Recessive• D) Genotype unknown

For a female to have For a female to have hemophilia, she must have hemophilia, she must have

• A) a Y chromosome• B) an inactivated allele• C) two recessive alleles• D) two dominant alleles

Roan cows are an example of Roan cows are an example of

• A) Co-Dominance• B) Incomplete Dominance• C) Sex-linked • D) Multiple Genes

Most human traits are …Most human traits are …

• A) Dominant• B) Recessive• C) Either Dominant or Recessive• D)

Complex and still not fully understood

Number 2 is Number 2 is

• A) Homozygous dominant• B) Heterozygous• C) Sex-linked • D) Homozygous Recessive

1 2

3 4

E E

e

E

Two parents have the genotype Gg Two parents have the genotype Gg for a dominant genetic disorder. for a dominant genetic disorder.

What are the chances their What are the chances their offspring will have the disorder?offspring will have the disorder?

• A) 25%• B) 50%• C) 75%• D) 100%

An individual who is An individual who is heterozygous for a ______ heterozygous for a ______ disorder is called a carrier.disorder is called a carrier.

• A) Allele• B) Albinism• C) Recessive• D) Dominant

Seed color and pod size are Seed color and pod size are examples of examples of

• A) Genotypes• B) Phenotypes• C) Heterozygous• D) Heredity

The alleles from your mother The alleles from your mother and father separating into and father separating into

different gametes is seen in different gametes is seen in

• A) Law of Dominance• B) Co-Dominance• C) Law of Independent Assortment• D) Law of Segregation

The ______ can only result in The ______ can only result in one _____.one _____.

• A) Trait, Allele• B) Genotype, phenotype• C) Phenotype, Allele• D) Phenotype, Genotype

Both parents have widow’s peak. Both parents have widow’s peak. Their children should have… Their children should have…

• A) All Widow’s peak• B) No Widow’s peak• C)

Half widow’s peak and half no widow’s peak

• D) Not enough information

F2:F1 :: F1:___F2:F1 :: F1:___

• A) F2• B) P2• C) P• D) F1

This diagram demonstratesThis diagram demonstrates

• A) Test Cross• B) Pedigree• C) Dihybrid Cross• D) Karyotype

II4 is what relation to III3?II4 is what relation to III3?

• A) Aunt• B) Father• C) Uncle• D) Nephew

For two heterozygous individuals For two heterozygous individuals the phenotype ratio is _____ and the phenotype ratio is _____ and

the genotype ratio is _____.the genotype ratio is _____.

• A) 3:1, 1:2:1• B) 1:2:1, 2:2• C) 1:1, 3:1• D) 3:1, 2:2

If a family has 4 girls, what are If a family has 4 girls, what are the chances of their next child the chances of their next child

being a boy?being a boy?

• A) 0%• B) 25%• C) 50%• D) 100%

Mendel’s discoveries came Mendel’s discoveries came from his… from his…

• A) Careful microscopic evaluation of chromosomes and genes

• B) Dissections on how fertilization occurs in pea plants

• C) Breeding experiments with many generations of fruit flies

• D) Analysis of offspring from several crosses of pea plants

Alternate forms of a gene are Alternate forms of a gene are called _______.called _______.

• A) Traits• B) Alleles• C) Chromosomes• D) Heredity

Which of the following has a Which of the following has a heterozygous genotype?heterozygous genotype?

• A) RR• B) rr• C) Rr• D) Rg

Color blindness is recessive and Color blindness is recessive and sex linked. On average there are sex linked. On average there are more color blind males becausemore color blind males because

• A. Women need two alleles to be colorblind

• B. Men require two alleles to be colorblind• C.

Women have two X chromosomes and it is inherited on the Y chromosome

• D. Men are more likely due to chance

A man with hemophilia marries a A man with hemophilia marries a woman that is a carrier. What woman that is a carrier. What

percent of their sons will have it?percent of their sons will have it?

• A) 0%• B) 25%• C) 50%• D) 100%

Two roan cows are crossed. Two roan cows are crossed. What are the phenotype ratio of What are the phenotype ratio of

the offspring?the offspring?

• A) 3:1• B) 75%:25%• C) 50% : 50%• D) 1:2:1

BbRr x BbRr are crossed. What BbRr x BbRr are crossed. What are the phenotype ratio of the are the phenotype ratio of the

offspring?offspring?

• A) 3:1• B) 1:2:1• C) 1:1:1:1• D) 9:3:3:1

What is the pattern of What is the pattern of inheritance for this pedigree?inheritance for this pedigree?

• A) Dominant• B) Recessive• C) Sex Linked• D) Cannot Determine

Parents, one heterozygous for Parents, one heterozygous for twotwo traits and the other homozygous traits and the other homozygous

recessive for recessive for twotwo traits, produce_______ traits, produce_______ offspring that are homozygous offspring that are homozygous

dominant for both traitsdominant for both traits

• A) 100%• B) 75%• C) 25%• D) 0%

A pedigree A pedigree cannotcannot be used be used to to

• A) Determine whether a trait is inherited

• B) Show how a trait is passed from one generation to next

• C) Determine whether a trait is dominant or recessive

• D) None of the above

If a girl is colorblind, …If a girl is colorblind, …

• A) Her mother must be colorblind• B) Her father cannot be colorblind• C) Her mother cannot be colorblind• D) Her father is colorblind

Straight hair is recessive and curly hair Straight hair is recessive and curly hair is dominant. In co-dominance, the is dominant. In co-dominance, the heterozygous condition would beheterozygous condition would be

• A) Curly• B) Straight• C) Wavy• D)

Some straight hairs, some wavy hairs

Which of the following is a Which of the following is a dominant trait?dominant trait?

• A) Ability to taste PTC• B) Hitchhikers thumb• C) Cystic Fibrosis • D) Albinism

In a pedigree, a circle In a pedigree, a circle represents a …represents a …

• A) Child• B) Parent• C) Male• D) Female

When an organism has a When an organism has a heterozygous genotype, the heterozygous genotype, the

dominant trait is seen. This can dominant trait is seen. This can be explained by …be explained by …

• A) Law of Dominance• B) Law of Segregation• C) Law of Independent Assortment • D) Law of Combination of Traits

A person has a widow’s peak. All A person has a widow’s peak. All of the following EXCEPT ____ can of the following EXCEPT ____ can

be the genotype.be the genotype.

• A) WW• B) Ww• C) W_• D) ww

Mendel crossed the P generation Mendel crossed the P generation and produced the ___ generation.and produced the ___ generation.

• A) P• B) F1• C) F2• D) P2