10. if the parents have type AB blood what is the probability that their children will have type O blood?

A.0%
B.25%
C.50%
D.100%

11.if you crossed a black chicken with a white chicken,black-chicken checkered chicken are produced.what kind of inheritance pattern does this follow?

A.incomplete dominance
B.sex-linked inheritance
C.codominance
D.multiple alleles​