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

The possible blood types of offspring of a male with type O blood and a female with type AB blood are A or B. This is because the male can only pass on an O allele, while the female can pass on either an A or B allele. Therefore, their offspring can have blood types A or B.

Make a punnet square for it

Sure! Here is a Punnett square for the possible blood types of offspring of a male with type O blood and a female with type AB blood:

| A | B
--------------------------------
O | AO | BO
O | AO | BO

Therefore, the possible blood types of their offspring are AO (blood type A) and BO (blood type B).