Which Factor Does Not Change Homozygous and Heterozygous Frequencies?

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SUMMARY

The discussion centers on identifying which factor does not influence the frequencies of homozygous and heterozygous individuals in a population. The correct answer is c. random mating, as it does not create a bias in mate selection among males and females. In contrast, mutations, migration, and genetic drift are all factors that can alter these frequencies. The conclusion emphasizes the importance of understanding the role of mating patterns in population genetics.

PREREQUISITES
  • Understanding of basic population genetics concepts
  • Familiarity with terms like homozygous and heterozygous
  • Knowledge of evolutionary mechanisms such as genetic drift
  • Awareness of the impact of migration on gene flow
NEXT STEPS
  • Study the Hardy-Weinberg equilibrium principles
  • Explore the effects of genetic drift on small populations
  • Investigate the role of mutations in evolutionary biology
  • Learn about gene flow and its implications in population dynamics
USEFUL FOR

Students of biology, particularly those studying genetics and evolution, educators teaching population genetics, and researchers interested in evolutionary mechanisms.

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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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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