Heredity Question Preview (ID: 42549)


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Cuteness is a dominant trait in bunnies. Two bunnies who are heterozygous for cuteness have numerous offspring. What percentage of their offspring would be predicted to not be cute?
a) 100
b) 75
c) 50
d) 25

Fluffy fur is a dominant trait in guinea pigs. Two fluffy guinea pigs have a non-fluffy offspring. What must be the genotypes of the parents?
a) AA and AA
b) Aa and AA
c) aa and aa
d) Aa and Aa

Attached earlobes are a dominant trait (E) over detached earlobes (e). If a mom is homozygous recessive for earlobes, and the dad is heterozygous, what percentage of their children are likely to have attached earlobes?
a) 25
b) 50
c) 75
d) 100

The ability to roll your tongue is dominant over not being able to roll your tongue. If you cannot roll your tongue, what is your genotype?
a) RR
b) Rr
c) rr
d) Rn

A widow’s peak is a dominant trait (W) over no widow’s peak (w). Mr. Trainer’s genotype is homozygous dominant (WW), and Mrs. Trainer is homozygous recessive (ww). What percentage of their offspring will be homozygous dominant (WW)?
a) 0
b) 25
c) 75
d) 100

In humans, brown eyes (B) are dominant to blue eyes (b). Your parents both have brown eyes, and both are heterozygous. What is dad’s genotype?
a) Brown
b) Blue
c) Bb
d) BB

In humans, brown eyes (B) are dominant to blue eyes (b). Your parents both have brown eyes, and both are heterozygous (Bb). What percentage of their offspring are likely to have brown eyes?
a) 0%
b) 25%
c) 75%
d) 100%

The dominant allele (R) codes for rainbow colored horns, and the recessive allele (r) codes for white horns. What percentage of offspring would have white horns from the cross of a homozygous dominant and a heterozygous unicorn?
a) 0
b) 25
c) 50
d) 75

In purple people eaters, one tongue is dominant and two tongues is recessive. If you crossed a hybrid with one with two tongues, what percentage of the offspring are expected to have two tongues?
a) 0
b) 25
c) 50
d) 75

In human blood type, O is recessive, and both A and B are dominant. If the father has O blood type, and the mother has A blood type with a genotype of AA, what percent of their children will have A blood type?
a) 0
b) 25
c) 50
d) 100

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