23. Spiderman is married to his high school sweetheart, Mary Jane. They have a son, Peter Jr. who has just reached puberty. When mad, Peter Jr. turns green, enlarges his size greatly, and generally smashes his room to bits. Spiderman begins to suspect that Mary Jane has cheated with his good friend, Bruce Banner (aka: the Hulk)? Help Spiderman determine who really is the father of Peter Jr. (Hint: Spiderman has Type O blood, Mary Jane is Type O, Peter Jr is Type O, and Bruce Banner has Type AB.)

A) Spiderman is most likely the father. (Spiderman and Mary Jane both have O alleles to give to Peter Jr.. Bruce Banner has both an A and a B allele, but no O alleles to give to Peter Jr.. )

B) Bruce Banner is most likely the father.

C) There is not enough information to tell who the father could be (both are possible fathers).

D) Neither men is a possible father of Peter Jr.