A young lady with type O blood gave birth to a baby with type O blood. In a court case she claims that a certain young man is the father of her child. The man has type A blood. Could he be the father? Can it be proven on this evidence alone that he is the father?

Yes, He could be the father.

Explanation:

In this case, the mother of the child have OO genes and the father either have AA genes or AO genes, therefore the child could either be A or O but in this case the child is O.

The child inherited the O Gene from the mother and it was expressed phenotypically which makes the child to have O blood group.

Thr father have AO genes and the mother have OO genes which signify that the two parents contributed Their O genes and the baby inherited OO genes and that is the reason the child's blood group is O.

it is a learned trait

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