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Genetics and Heredity — Test Answers

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21
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Mary has type A blood. Her son Bill has type AB blood. Which blood type does Bill's dad have if he is homogenous for blood type?

A
B
B
O
C
A
D
AB
22
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Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. What is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY times RrYy ?

A
100 percent
B
50 percent
C
25 percent
D
0 percent
23

Which of Mendel’s generations was allowed to self-pollinate?

A
cap f sub 1 generation
B
cap p generation
C
cap p generation and cap f sub 2 generation
D
cap f sub 1 generation and cap f sub 2 generation
24

A purebred plant that has yellow flowers is crossed with a purebred plant that has white flowers. All the offspring have yellow flowers. Which conclusion about yellow flowers is supported by these results?

A
Yellow flower color is a heterozygous trait.
B
Yellow flower color is a dominant trait.
C
Yellow flower color is a monohybrid trait.
D
Yellow flower color is a recessive trait.
25

In the pedigree that is shown, which represents Irene's allele combination?

A
cap x to the h th power cap y
B
cap x to the h th power cap x to the h th power
C
cap x to the cap h th power cap x to the h th power
D
cap x to the cap h th power cap x to the cap h th power

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Genetics and Heredity — Test Answers — Biology