After a storm on an island, only a few lizards survive and form the new population. What effect does this show?
Answer and explanation
Correct answer: Founder effect or genetic drift
The governing concept is genetic drift, a random change in allele frequencies caused by chance rather than by adaptive advantage. Here, a storm leaves only a small number of lizards, and their genes establish the next population. Because this small group may not represent the original population, gene frequencies can change by chance. This bottleneck-like event illustrates drift; option A is correct.
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What is the correct answer to this question?
Founder effect or genetic drift
Why is this the correct answer?
The governing concept is genetic drift, a random change in allele frequencies caused by chance rather than by adaptive advantage. Here, a storm leaves only a small number of lizards, and their genes establish the next population. Because this small group may not represent the original population, gene frequencies can change by chance. This bottleneck-like event illustrates drift; option A is correct.
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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