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), what is the probability that the child indicated by the question mark will be a male with the disease?

Solution

Answer is 0.5

The probability of having a male child is 0.5 or 1/2.

Since the disease is X linked dominant, all the children will get the disease whether they are male or female.