Question

Which of the following is/are true about the Hardy-Weinberg Principle? (I) If Hardy-Weinberg equilibrium is observed at one gene, it implies that there is no selection on the entire genome. (II) A population that is increasing in size will never reach Hardy-Weinberg equilibrium. (III) If a population has 10 individuals, and the genotype frequencies at a particular locus are freq(AA) = 0.25, freq(Aa)=0.5, freq(aa) =0.25, then this information alone is enough to allow us to conclude that this population is in Hardy-Weinberg equilibrium.

Answer 1

Answer:

The answer is C: If a population has 10 individuals, and the genotype frequencies at a particular locus are freq(AA) = 0.25, freq(Aa)=0.5, freq(aa) =0.25, then this information alone is enough to allow us to conclude that this population is in Hardy-Weinberg equilibrium.

Explanation:

First of all it is important to mention that Hardy-Weinberg equilibrium can be reached when all factors that alter or modify the frequencies of the population are deleted or totally excluded. In this sense, those frequencies generated during the mating process do not vary regardless of mating is random. Genetic frequencies that can emerge during the process are AA, which is the dominant homozygote, Aa, which is the heterozygote and; aa, which is the recessive homozygote. These frequencies remain constant even when the number of members of the population is infinite, it means that even when the size of the population increases those frequencies are going to be equal. Having said that, these frequencies are in charge of defining the Hardy-Weinberg equilibrium.