Genetics: Analysis and Principles 5th Edition by Robert Brooker

Exercise 26

A woman with achondroplasia (a dominant form of dwarfism) and a phenotypically unaffected man have seven children, all of whom have achondroplasia. What is the probability of producing such a family if this woman is a heterozygote What is the probability that the woman is a heterozygote if her eighth child does not have this disorder