Hemophilia is an X-linked recessive disorder that is passed through generations and can be traced by using a pedigree.
A genetic pedigree is shown. The parents of Irena have alleles of Upper X Superscript Upper H baseline Upper Y and Upper X superscript Upper H baseline Upper X Superscript h.
In the pedigree that is shown, which represents Irene's allele combination?
XhXh
XHXh
XHXH
XhY