Question

The change in the frequency of a gene that occurs merely by chance and not by selection in small populations is called

• A. Hardy – Weinberg law
• B. Sewall Wright effect
• C. Founder effect
• D. Gene flow

Hint:

The Sewall Wright effect emphasizes the importance of genetic drift in small populations, where random variations can lead to significant changes in the gene pool over time.

Answer 1

The Correct Option is B

- Sewall Wright effect is a concept in population genetics, where the change in gene frequency within a small population occurs by chance (genetic drift), rather than by natural selection. In small populations, random changes in allele frequencies are more significant, and this leads to the genetic diversity observed in isolated populations.

Thus, the correct answer is Option B, the Sewall Wright effect.