In fruit flies, one genotype for red eyes is written xrxr. the r stands for the dominant allele for red eyes. what does the x stand for?

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

Apea plant that is heterozygous for the tall phenotype can produce short offspring when self pollinating. which of the following explains why this occurs? a. segregation of allels b. condominance of traits c. polygenic expression of traits d. independent assortment of alleles

Why does the skin of your finger shrink when you wash clothes for a long time?