If you cross a female carrier of hemophilia with a normal, healthy male, what are the chances of having a male with hemophilia?

Queen Victoria had 1 (Leopold) out of four male offspring with hemophilia. What was the probability of this scenario?   Hemophilia is known as "The royal disease" because many of the European royal families had members afflicted with it. A really famous case was Queen Victoria's (1819-1901) descendants who spread the disease across Europe, from Spain to Russia. You can see the pedigree of Queen Victoria's family here:Hemophilia is an X-linked recessive disease. With the information provided, please answer the following questions:

Suppose a woman who is a carrier of sickle-cell trait (making her a heterozygote) has children with a man who is totally healthy and does not carry the gene for sickle-cell trait at all. Which one of the following is true about their potential children? (Draw a Punnett square on scratch paper if it helps you.) A) None of their children will have sickle-cell disease. B) All of their children will have sickle-cell disease. C) All of the couple's children would be heterozygous carriers like the mother.

Is blood type an example of pleiotropy?

A heterozygous woman with Type-A blood, and a man with Type-O blood, have a child. What are the odds that the child will have type O-blood? A) 25% B) 75% C)100% D) 50%

If a girl has blood type B and her mother has blood type A, what genotype(s) and corresponding phenotype(s) could the other parent have?

Is it possible for any sonof a couple formed by ahemophilic man (XhY) and anonhemophilic noncarrier(XX) woman to be hemophilic?

A mother with blood type B gives birth to a child with blood type B. What could not be the blood type of the father?

Cross the mother with genotypes IAIOHh (or simply AOHh) to a father with genotypes IAIBhh (or simply AOhh). What are the possible blood types among the offspring?

A man with blood type B marries a woman with blood type A. They have four children with blood types A,A,B, and AB. What are the genotypes of the parents?