Solutions For An Introduction to Genetic Analysis Chapter 2 Problem 62P

The probability of the man and the woman's parents receiving the allele from their heterozygous parents is.

We know that, both the parents are heterozygous, for a recessive trait, and the probability of having unaffected child is.

So, the man to be a carrier of the allele, the probability is.

Also, the woman to be a carrier of the allele, the probability is.

The probability of both heterozygous man and woman, passing recessive alleles to a child is.

Thus, the probability of having an affected child is: