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.
Diana is a human from this group. Diana's phenotype for the xeroderma pigmentosum trait is not having xeroderma pigmentosum. Diana's genotype for the xeroderma pigmentosum gene is Ee.
Based on this information, complete the following statement.
Diana is xeroderma pigmentosum gene