Which Factor Does Not Change Homozygous and Heterozygous Frequencies?

AI Thread Summary
The discussion focuses on identifying which factor does not influence the frequency of homozygous and heterozygous individuals in a population. The options considered include mutations, migration, random mating, and genetic drift. It is concluded that random mating is the factor that does not cause changes in these frequencies, as it involves unbiased selection among individuals. In contrast, mutations, migration, and genetic drift are recognized as factors that do affect these frequencies. Thus, random mating is the correct answer to the question posed.
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Homework Statement


Which of the following is not a factor that causes changes in the frequency of homozygous and heterozygous individuals in a population?

a. mutations
b. migration
c. random mating
d. genetic drift

The Attempt at a Solution



I know that mutations is a factor, so cross out a.
I would say that migration is a factor, so cross out b. I am now left with two options: c. & d. This is where it gets confusing.
 
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OK, I know the answer. It's c. Random mating is not a factor, because in random mating males are statistically unbiased in choosing a female - in other words, they do not prefer one female over the other. The same can be said of the females.
 
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