Free Printable Codominance & Multiple Alleles

1.

Chicken feathers are inherited through codominance. When a black chicken BB is mated with a white chicken WW, the resulting phenotype is called erminette/checkered BW.

What are the phenotypes if a checkered /erminette chicken is mated with a black feathered chicken.

a)

Black: 50%

White: 0%

Checkered: 50%

b)

Black: 0%

White: 50%

Checkered: 50%

c)

Black: 50%

White: 0%

Grey: 50%

d)

Black: 50%

White: 50%

Checkered 50%

2.

Chicken feathers are inherited through codominance. When a black chicken BB is mated with a white chicken WW, the resulting phenotype is called erminette/checkered BW.

What are the genotypes if a checkered /erminette chicken is mated with a black feathered chicken.

a)

BB: 50%

WW: 0%

BW 50%

b)

BB: 0%

WW: 50%

BW: 50%

c)

BB: 50%

Bb: 0%

bb: 50%

d)

BB: 50%

WW: 50%

BW: 50%

3.

Chicken feathers are inherited through codominance. When a black chicken BB is mated with a white chicken WW, the resulting phenotype is called erminette BW.

If two checkered/erminette chickens are crossed what are the chances of a checkered chicken?

a)

50%

b)

25%

c)

75%

d)

100%

4.

Cat fur color is determined by codominance. The allele for tan fur (TT) and the allele for black fur (BB) are codominant. The heterozygous condition (TB) results in a cat with tan and black spots, called a tabby cat.

If a tan cat was crossed with a tabby cat what are the chances of a tan cat? What are the chances of a black cat?

a)

50%, 50%

b)

50%, 0%

c)

100%, 75%

d)

25%, 25%

5.

Cat fur color is determined by codominance. The allele for tan fur (TT) and the allele for black fur (BB) are codominant. The heterozygous condition (TB) results in a cat with tan and black spots, called a tabby cat.

If a black cat was crossed with a tan cat what are the chances of a tabby cat?

a)

50%

b)

0%

c)

100%

d)

25%

6.

What is the Genotype of a Heterozygous B person?

a)

BB

b)

BO

c)

OO

d)

AB

7.

What is the Genotype for an AB blood type?

a)

OO

b)

BB

c)

AB

d)

Aa

8.

What is the Probability of having a A blood type when Mom= Heterozygous A and DAD= AB

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

9.

What is the Genotype for Homozygous A blood Type?

a)

AA

b)

AO

c)

Aa

d)

AB

10.

If the Child is Type O Blood type which of the Following blood types could be the parents?

a)

AO X BO

b)

AA X BO

c)

AB X BO

d)

AB X AO

11.

What is the probability of having Blood type A when the MOM= AO and the DAD = AA?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

Codominance & Multiple Alleles

Total questions: 11

Worksheet time: 6mins

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