Chapter 4, Problem 36P

Each of the four pedigrees that follow represents a human family within which a genetic disease is segregating. Affected individuals are indicated by filled-in symbols. One of the diseases is transmitted as an autosomal recessive condition, one as an X-linked recessive, one as an autosomal dominant, and one as an X-linked dominant. Assume all four traits are rare in the population.

a.	Indicate which pedigree represents which mode of inheritance, and explain how you know.
b.	For each pedigree, what would you advise the parents of the chance that their child (indicated by the hexagon shape) will have the condition?