Asked by bells

A couple has just learned that their daughter has hemophilia. They already have a son who does not have the disease. What are the genotypes of the couple? Explain your reasoning.
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The gene for hemophilia is sex-linked, a recessive on the X-chromosome. The daughter must have both Xs with the gene, while the son does not have the gene on his X chromosome.

Where do I go from there? Please help me I'm having a very hard time trying to understand this
Answered by PsyDAG
Since the son gets the X from mom, she is heterozygous for that gene, a carrier.

The daughter has to get XX, both with hemophilia, one from each parent. That must mean that dad has hemophilia too.
Answered by elsa
thank you
Answered by Anonymous
Bunch
Answered by Anonymous
thank you so much!
Answered by ......
So does that me she got it right
Answered by Kim un
Yes
Answered by Anonimoose
Thanks that was really helpful
Answered by :)
Tysm for your help! I really did not understand it:(
Answered by Bruh
What he basically means is that they must both have the disease and so the son will have the disease.
Answered by Anonymous
no...
Answered by Anonymous
just passed it to the daughter
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