Hemophilia is caused by several genetic factors; one, a recessive allele of an x- linked gene, is the subject of this problem. assume that a man with hemophilia marries a normal woman whose father had hemophilia. what is the probability that their first son will have hemophilia?

It’s recessive. The mother who is a carrier is heterozygous, but she does not have the disease. The only offspring who have the disease are the boys who inherited one mutated gene.

answer; the correct answer is desert plants;

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.