1. Munchkin is an autosomal dominant trait. It is lethal in embryos in the homozygous dominant condition:

a. If a munchkin cat mates with a genotypically normal cat, what is the probability of having genotypically normal kittens?

b. If two munchkin cats mate, what is the probability of having a female munchkin kitten?

2. Widows peak is an autosomal dominant trait. If a woman who is heterozygous widows peak mates with a man who is genotypically normal for widows peak, what is the probability of having genotypically normal children?

3. Cystic fibrosis and blue eyes are both autosomal recessive traits. If a woman who is a carrier for Cystic Fibrosis and a carrier for blue eyes mates with a man who is genotypically normal for cystic fibrosis and has blue eyes:

a. What are the chances of having children who are genotypically normal for cystic fibrosis and have blue eyes?

b. What are the chances of having sons who are carriers for cystic fibrosis and have blue eyes?

4. Black hair and free earlobes are both dominant traits. If a woman with heterozygous black hair and attached earlobes marries a man who has red hair and is genotypically normal for free earlobes what is the probability of having children with red hair and free earlobes?

5. A female orange cat mates with a male black cat. Can any cats be calico?

6. Colorblindness is a sex linked recessive trait. If a woman who is a carrier for colorblindness marries a man who is genotypically normal for colorblindness:

a. What is the probability of having children colorblind sons?

b. What is the probability of having colorblind children?

c. What is the probability of having genotypically normal daughters?

7. A woman has 2 children, sally and Sam. Sally is A+ and Sam is O-. Is it possible for their father to have been B-?

8. A man who is heterozygous A Rh - mates with a woman who is homozygous B Rh +, if one of their children was AB-, what are the possible genotypes and phenotypes of the other children?