Question

Hemophilia is an X-linked recessive disorder that is passed through generations and can be traced by using a pedigree. mc023-1.jpg In the pedigree that is shown, which represents Irene's allele combination?

Answer 1

X^H X^H, because Irene does not have the recessive gene therefor her chromosomes are both dominate showing that she does not have the recessive trait

Answer 2

Irene's allele combination would be $X^HX^H$

Carrying out the cross between John and Ann:

            $X^HY$          +              $X^HX^h$

       

            $X^HX^H$   $X^HX^h$   $X^HY$   $X^hY$

Out of the 2 possible females, one is a carrier and the other is totally free from hemophilia's allele.

The carrier has been designated as Marie in the pedigree. Irene being a female, therefore, would be the second possible female. Hence Irene's allele combination would be $X^HX^H$

More on human pedigree can be found here: https://brainly.com/question/5624004?referrer=searchResults