LIFE SCIENCE

Detailed explanation-1: -Question: Females who have hemophilia are an easy genotype to identify. They are XnXn because they musthave both recessive alleles. If one dominant were present the female would be normal.

Detailed explanation-2: -The genotype for a woman with hemophilia will be: XhXh. Where ‘Xh’ means gene carrying the mutation for hemophilia present in the X chromosome.

Detailed explanation-3: -The allele for having this disorder will be represented as XH . If a woman is heterozygous for hemophilia, it means she does not phenotypically express this disorder; only that she is a carrier of this disorder. Her genotype is therefore XXH X X H .