Mary has blood type AB. She marries Sam, who is blood type A. Sam's mother is blood type O. What are the possible genotypes and phenotypes of Sam and Mary's offspring?
a. Parents:
- Mary: AB
- Sam: A
- Sam's mother: O
b. Punnett:
- Possible genotypes of Sam and Mary's offspring: AA, AB
- Possible phenotypes of Sam and Mary's offspring: A, AB
c. Summary:
The possible genotypes of Sam and Mary's offspring are AA and AB, and the possible phenotypes are A and AB.