Texts: Include all Punnett squares and calculations as needed. Hemophilia is a recessive X-linked disorder. Sally isn't affected by hemophilia; however, she is a carrier for the gene. Her husband, Paul, is affected by hemophilia. What is the probability of them having an affected daughter? Answer: 25%
Added by Shawn H.
Step 1
Since Sally is a carrier for the hemophilia gene, she must have the genotype X^H X^h, where X^H represents the normal allele and X^h represents the hemophilia allele. Paul is affected by hemophilia, so he must have the genotype X^h Y, where Y represents the Show more…
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