Question

For the following four very diversfied human populations, what are the greatest AND least number of alleles for an autosomal gene, a X-linked gene, and a Y-linked gene, respectively?

Population 1: 10 females and 5 males

Population 2: 5 females and 10 males

Population 3: 15 females

Population 4: 15 males

Answer 1

obviously the ratio of autosomal alleles are much higher than the X linked or y linked genes.

In population 1 the ratio of male and female is 50:50 so both have equal alleles.

In population second the ratio of female vs male is 5: 10

In population III the ratio of females are more and no males.

Polulation 4 = No females

The allele no. of X linked genes are too high because females have two X chromosomes and least no of alleles are due to chromosome Y because the no. of Y chromosomes are 1 in one male.

1 female = 2 x chromosomes

1 male = 1 x and 1 Y chromosomes

Highest allele= Autosomal linked

least allele = Y linked