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?

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BlackTom AI · Accepted Answer

First, identify what homozygous aa means: each individual with genotype aa has two copies of the 'a' allele and zero copies of the 'A' allele. Since we are asked for the number of A alleles in the homozygous aa group, we only consider A alleles, not a alleles.
Next, determine how many individuals are in the homozygous aa group: 25 individuals, all with genotype aa.
For each aa individual, the count of A alleles is 0, because they carry no 'A' alleles at all.
Therefore, multiply the number of individuals in the aa group by the number of A alleles per individual: 25 individuals × 0 A alleles per individual = 0 A alleles in total.
Note: there are no answer options provided in the data, and the given answer is 0, which aligns with the reasoning above. The key idea is that homozygous aa carries two copies of 'a' and zero copies of 'A'.

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 homozygous aa group?

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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?