Find probability that their next child will show both defect

Solution-How long a bird stays in any stopover location
April 26, 2020
Solution-Expected frequency of the homozygous
April 26, 2020

Find probability that their next child will show both defect

In humans, nearsightedness and phenylketonuria are both inherited as single-locus autosomal recessive traits that assort independently. Assume that a family has been identified in which both parents were phenotypically normal, but their first child was phenylketonuric and their second child developed nearsightedness.

a. What is the probability that their next child will show both defects? Show your work.

b. What is the probability that their next child will exhibit neither defect? Show your work.