What are all the possible blood types of offspring of a male with type O blood and a female with type AB blood?

To determine the possible blood types of offspring of a male with type O blood (genotype = OO) and a female with type AB blood (genotype = AB), we will create a Punnett square:

Male (OO):
O O

Female (AB):
A B

First, we will determine the possible gametes of each parent:
Male (OO): O
Female (AB): A, B

Now, we will fill in the Punnett square:

A B
O AO BO
O AO BO

From the Punnett square, we can see that the possible blood types of the offspring are AO (A blood type) and BO (B blood type).

Therefore, the possible blood types of offspring of a male with type O blood and a female with type AB blood are A (blood type) and B (blood type).