genetics

| December 7, 2015

Having a free earlobe is an autosomal dominant trait in humans. Colorblindness is an X-linked recessive trait in humans.
A man who is heterozygous for free ears marries a woman who has attached earlobes and is colorblind.

a) What is the probability that one of their daughters will have attached earlobes and be colorblind?

b) What is the probability that one of their sons will have free ears and be colorblind?
Answer

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