Which Factor Does Not Change Homozygous and Heterozygous Frequencies?

In summary, the factors that can cause changes in the frequency of homozygous and heterozygous individuals in a population are mutations, migration, and genetic drift. Random mating is not a factor as it does not influence the selection of mates.
  • #1
moonman239
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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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  • #2


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.
 

FAQ: Which Factor Does Not Change Homozygous and Heterozygous Frequencies?

What is the significance of homozygous and HZ individuals in a population in terms of genetics?

The presence of homozygous and HZ individuals in a population is important because it indicates the genetic diversity and stability of the population. Homozygous individuals have two identical alleles for a specific gene, while HZ individuals have one dominant and one recessive allele. This genetic makeup can affect the expression of certain traits and can also impact the potential for genetic disorders.

Why is it important to understand the frequency of homozygous and HZ individuals in a population?

Knowing the frequency of homozygous and HZ individuals in a population allows scientists to better understand the genetic makeup of the population and predict the likelihood of certain traits or disorders being present. It also provides insights into the evolutionary history and genetic diversity of the population.

How does the frequency of homozygous and HZ individuals change in a population?

The frequency of homozygous and HZ individuals in a population can change through various mechanisms such as natural selection, genetic drift, and migration. These factors can affect the distribution of alleles and potentially increase or decrease the frequency of homozygous and HZ individuals.

Can the frequency of homozygous and HZ individuals be manipulated in a population?

Yes, the frequency of homozygous and HZ individuals can be manipulated through selective breeding and genetic engineering techniques. These methods can be used to increase or decrease the frequency of certain alleles in a population, which can impact the occurrence of homozygous and HZ individuals.

How does the frequency of homozygous and HZ individuals relate to genetic disorders?

The frequency of homozygous and HZ individuals can play a role in the development of genetic disorders. In some cases, having two copies of a recessive allele (homozygous) or one copy of a dominant and one copy of a recessive allele (HZ) can result in the expression of a genetic disorder. Understanding the frequency of these individuals in a population can help researchers identify potential health risks and develop interventions to prevent or treat genetic disorders.

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