Hemophilia was called the royal disease because many of the European royal families had members afflicted with hemophilia. Hemophilia is a sex-linked, recessive, X-chromosome disorder, It was known that Queen Victoria was unaffected but was a carrier of the hemophilia gene (XHXt1), Suppose Queen Victoria's husband, Prince Albert, was affected with hemophilia (X?Y).

a. What is the percent probability that a son of Queen Victoria and Prince Albert would be unaffected?
b. What is the percent probability that Queen Victoria and Prince Albert will have an affected child either male or female)?
c. What is the percent probability that Queen Victoria and Prince Albert will have two affected females?