Which of following factor is/ are NOT responsible to change the frequency of alleles in a population?
A. Gene flow or gene migration
B. Natural selection
C. Chemical radiation
D. Genctic drift
E. Genetic recombination
Choose the most appropriate answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) →C only
The factors that are responsible for changing the frequency of alleles in a population include:
- Gene flow or gene migration (A): Movement of genes from one population to another can change allele frequencies.
- Natural selection (B): This process favors the survival of individuals with advantageous traits, changing allele frequencies.
- Genetic drift (D): Random changes in allele frequencies in small populations due to chance events can lead to significant changes over time.
- Genetic recombination (E): The reshuffling of genes during meiosis contributes to genetic variation in a population.
Chemical radiation (C) is not a direct factor that changes allele frequencies in a population; instead, it can cause mutations, which might affect allele frequencies if the mutations are passed on to the next generation.
Therefore, the most appropriate answer is C only because chemical radiation does not directly change allele frequencies like the other factors listed.
The Hardy-Weinberg principle, also known as the Hardy-Weinberg equilibrium or law, is a fundamental concept in population genetics that describes the conditions under which the frequency of alleles in a population remains constant from generation to generation. Five factors are known to affect Hardy-Weinberg equilibrium. These are gene migration or gene flow, genetic drift, mutation, genetic recombination and natural selection.