Answer:
i think its A im sorry if it isnt but im pretty sure its A but it might be wrong
Explanation:
While females have a second X-chromosome that masks the X-linked recessive allele, males do not, but instead have a Y-chromosome which does not represent the same alleles as the X-chromosomes, resulting in not being able to mask the X-linked recessive allele.
Answer is D.
you can learn A,B, and C from examining fossils
