Question

this passage describes the xeroderma pigmentosum trait in humans.
xeroderma pigmentosum is a condition that causes skin to be easily damaged by sunlight. humans with xeroderma pigmentosum avoid exposure to sunlight by wearing protective clothing, using sunscreen, and not going outside during the day.
in a group of humans, some individuals have xeroderma pigmentosum and others do not. in this group, the gene for the xeroderma pigmentosum trait has two alleles. the allele e is for not having xeroderma pigmentosum, and the allele e is for having xeroderma pigmentosum. william, a human from this group, does not have xeroderma pigmentosum. william has one allele for not having xeroderma pigmentosum and one allele for having xeroderma pigmentosum.
based on this information, what is william’s genotype for the xeroderma pigmentosum

Explanation:

The problem is about the genetic trait of xeroderma pigmentosum in humans, which falls under the study of genetics within Biology. We know that William has one allele for not having xeroderma pigmentosum (E) and one allele for having it (e). In genetics, a genotype with two different alleles (one dominant, one recessive) is heterozygous. So William's genotype should be Ee.

Answer:

William's genotype for the xeroderma pigmentosum trait is Ee.