Answer:
1/4 suffer from hemophilia
1/4 are heterozygous
Explanation:
So since they are normal but their son isn't it is assumed that the mom is the carrier since the dad has to be X^HY
X^HY x X^HX^h
Set up a pedigree
X^HX^H X^HX^h
X^HY X^hY
1/4 suffer from hemophilia (X^h)
1/4 are heterozygous (X^HX^h)
<span>
C. The allele changed from being autosomal to be sex-linked.</span>
Genetic information will not be transmitted by the cell
<span>Conjugation in which two cells temporarily combine in order to transfer genetic materials. After combination they then divide again, allowing of the information to pass and replace the previous members of the population.</span>
Fossils could not be found in that layer of rock