In a population of 100 individuals, we have 25 people that are homozygous AA, 50 people that are heterozygous Aa, and 25 people that are homozygous aa. How many A alleles are in the heterozygous Aa group?

Question

BlackTom AI · Accepted Answer

To solve this, first identify how many A alleles are present specifically in the heterozygous Aa group.

- Each heterozygous Aa individual carries one A allele (and one a allele).
- There are 50 individuals in the Aa group.
- Therefore, the total number of A alleles in the Aa group = 50 individuals × 1 A allele per individual = 50 A alleles.

For additional context, if you were asked about the total number of A alleles in the entire population: AA individuals contribute 2 A alleles each, Aa individuals contribute 1, and aa individuals contribute 0. That would be 25×2 + 50×1 + 25×0 = 50 + 50 + 0 = 100 A alleles in total. This cross-check helps validate that the numbers are internally consistent, even though it isn’t required for the specific question about the Aa group.

ANTH 246 OL2 SP25: Forensic Science (Antoniuk, C)

In a population of 100 individuals, we have 25 people that are homozygous AA, 50 people that are heterozygous Aa, and 25 people that are homozygous aa. How many A alleles are in the heterozygous Aa group?

View Explanation

Log in for full answers

Similar Questions

In a population of 1000 flowers there are two possible alleles for flower color, one dominant and one recessive. 400 plants are homozygous dominant, 200 plants are heterozygous, and 400 plants are homozygous recessive. How many recessive alleles are in the gene pool?

In a population of 100 individuals, we have 25 people that are homozygous AA, 50 people that are heterozygous Aa, and 25 people that are homozygous aa. How many alleles total are in this population?

In a population of 100 individuals, we have 25 people that are homozygous AA, 50 people that are heterozygous Aa, and 25 people that are homozygous aa. How many A alleles are in the homozygous aa group?