Genetics! Please help with this problem question?

Question

Hemophilia is a recessive, sex-linked trait. Use an n to represent the allele for hemophilia. A woman that normal blood clotting and type A blood marries man with normal blood clotting and a hybrid type A blood.

a. give woman's father's genotype as completely as can be determined.

b. term best describes woman related to hemophilia?

c. what are chances of couple having child with hemophilia?

d. what are chances couple having daughter with hemophilia?

e. what are chances couple having son with blood type A and hemophilia?

f. what are chances woman's sons should inherit the hemophilia from their mother?


It is all very confusing for me

Please, only serious answers

Sorry, I forgot to add;
The woman's father was known to be a hemophilia with type A blood. Can you please look at your answer again.

thankyou

Answer 1

Edited after the information added about woman's father.

Woman must be XN Xn (she doesn't have hemophilia, but she got her father's only X which was Xn). Her blood type must be AA because the other person is described as hybrid type A, and the woman is not described as being hybrid. In reality, though, she could be AA or AO. (still can't tell about this because father could be AA or AO)

Man must be XN Y and AO.

a. Woman's father is Xn AA or Xn AO because he has hemophilia.
b. The woman is a carrier for hemophilia

c. The woman is a carrier for hemophilia (XN Xn) and the man has normal clotting (XN Y), then their kids could be any one of these genotypes: XN XN, XN Y, Xn XN, Xn Y. The last one is a male with hemophilia. One out of four possibilities is a child with hemophilia, so the chance is 1/4.

d. There is no chance that a daughter will have hemophilia. Look at the two possibilities for daughters in the answer to part C. A daughter will always get XN from the father, so a daughter in this problem will never have hemophilia.

e. The sons would all have type A blood. The possiblities for sons are XN Y and Xn Y. One of two possibilities has hemophilia, so the probability is 1/2 since the mother is a carrier.

f. Any boys with hemophilia got it from their mother because they get the X from Mom and the Y from Dad and the hemophilia allele is on the X. Since the mom in this problem is a carrier, then any son has a 1/2 chance of getting hemophilia.

Answer 2

Try googleing this one ....... lol
Im confused