How is genetic drift different from natural selection?
Answer and explanation
Correct answer: Genetic drift occurs by chance, while natural selection is linked with fitness
Natural selection is a non-random process in which heritable variations that improve survival or reproduction tend to become more frequent. Genetic drift, in contrast, changes trait or allele frequencies through chance events, particularly in small populations, whether or not a trait is advantageous. Therefore, option A correctly identifies the difference. The other options confuse an evolutionary mechanism with a life process or deny the role of variation.
Frequently asked questions
What is the correct answer to this question?
Genetic drift occurs by chance, while natural selection is linked with fitness
Why is this the correct answer?
Natural selection is a non-random process in which heritable variations that improve survival or reproduction tend to become more frequent. Genetic drift, in contrast, changes trait or allele frequencies through chance events, particularly in small populations, whether or not a trait is advantageous. Therefore, option A correctly identifies the difference. The other options confuse an evolutionary mechanism with a life process or deny the role of variation.
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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