Question

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

Answer 1

To get you started, what are the genotypes of the blue-eyed man and the brown-eyed (homozygous) woman? You can use B for brown and b for blue.

Answer 2

@jc7 is correct. A good way to start genetics problems is to assign a notation to all the genes (in this case, one) and alleles (in this case two) in the problem.

Once you have done that, you should start thinking about the relationships between the genes and the alleles. You are told that brown (B) is dominant over blue (b). That is, if a person has one brown allele and one blue allele, he or she will have brown eyes because the single brown allele is entirely able to produce brown eyes...