John, who has hemophilia wants to have children but does not want to risk the chance of them inheriting hemophilia.
He has mentioned to his wife, Carol, that they should adopt rather than having children of their own. Carol wants to
have children of their own and is trying to convince John that because she is only a carrier of the hemophilia allele
and does not actually have it that it is not possible for the children to inherit the disorder. He thinks she is wrong and
that there is a chance their children could have the disorder. Who is correct?
Carol is correct. There is not a chance that any of their offspring will have
hemophilia.
John is correct, there is a 25% chance that their children will have
hemophilia.
John is correct, there is a 50% chance that their children will have
hemophilia.
There is not enough information to determine if their children will have
hemophilia.