Assume a disease is dominant indicated by shading Based on t

Assume a disease is dominant, indicated by shading. Based on the pedigree (click to enlarge), which parent determines whether the child indicated by the question mark will have the disease? Female parent. Male parent. Either parent.

Solution

Male Parent

Because it shows in the pedigree that it is a X-linked disorder. If the child is female definitly she will be diseased getting both the diseased X allele from both the parents. Whereas when the child is male he will get one diseased X allele from mother and normal Y allele from father making him a carrier.