Why can the effect of genetic drift be stronger in a small population?
Answer and explanation
Correct answer: Because some traits can increase or decrease quickly by chance
Genetic drift is random change in allele frequency. In a small population, each individual represents a relatively large fraction of the gene pool, so the accidental loss, survival, or reproduction of only a few individuals can greatly change the proportion of alleles. Repeated chance events may even eliminate an allele. Option A is correct; B, C, and D are biologically false explanations.
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What is the correct answer to this question?
Because some traits can increase or decrease quickly by chance
Why is this the correct answer?
Genetic drift is random change in allele frequency. In a small population, each individual represents a relatively large fraction of the gene pool, so the accidental loss, survival, or reproduction of only a few individuals can greatly change the proportion of alleles. Repeated chance events may even eliminate an allele. Option A is correct; B, C, and D are biologically false explanations.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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