In humans, the allele for brown eyes is dominant to the allele for blue eyes. If a man with blue eyes and a woman with brown eyes who is homozygous for eye color have children, what is the probability of having a child with blue eyes?
25 percent
100 percent
50 percent
0 percent

Question

In humans, the allele for brown eyes is dominant to the allele for blue eyes. If a man with blue eyes and a woman with brown eyes who is homozygous for eye color have children, what is the probability of having a child with blue eyes? 
25 percent 
100 percent 
50 percent 
0 percent

andrefontex · Answer

B - Brown 
b - blue 
it says the woman has homozygous for eye color.. BB 
the man has blue eyes - bb. 
if he had Bb, he couldn't have blue eyes, he had brown. because it's said "the allele for brown eyes is dominant". 
So, can the child have blue eyes?

anonymous · Answer

yes. i think its A but i wasnt sure

andrefontex · Answer

it's not A

anonymous · Answer

oh

anonymous · Answer

D ?

andrefontex · Answer

you just need ti know that, as the allele for brown eyes is dominant, a person can only have blue eyes, if she has both bb alleles.. she can't have blue eyes with one allele from blue and one from brown (bB)

andrefontex · Answer

indeed, do you know how to do the punnett square to verify it?

andrefontex · Answer

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finish it