Mary has type a blood. Her son Bill has type AB blood. Which blood type does Bill's dad have if he is homogenous for blood
type?

has the blod type O

Explanation:

He would need to be blood type B (B) because Mary already contributed the dominant A and since he is homozygous then he must carry the homozygous B type to contribut the B so that Bill can get the AB blood type

Explanation:

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands