- In humans, a widow’s peak is recessive.  A purebredmother with no widow’s peak marries and a father with a widow’speak.  What are the probable genotypes and phenotypes oftheir offspring?
- Assume in an animal that brown is dominant over white. Themother is heterozygous brown and the father is homozygous white.What are the probable genotypes and phenotypes of theiroffspring?
- Albinism is a condition in which pigmentation is lacking. Inhumans, the result is white hair, nonpigmented skin, and pink eyes.The trait in humans is caused by a recessive allele. Two normalparents have an albino child. What are the parents’ genotypes? Whatis the probability that the next child will be albino?
- Huntington disease is a rare fatal, degenerative neurologicaldisease in which individuals start to show symptoms in their 40s.It is caused by a dominant allele. Joe, a man in his 20s, justlearned that his father has Huntington disease.
a. what is the probability that Joewill also develop the disease?
b. Joe and his new wife have beeneager to start a family. What is the probability that their firstchild will eventually develop the disease?
