What is the most basic difference between genetic drift and natural selection?
Answer and explanation
Correct answer: Genetic drift is linked with chance and natural selection with adaptation
Both genetic drift and natural selection can change allele frequencies, but their causes differ. Genetic drift is a random change produced by chance, especially in small populations, and it may increase or eliminate a trait without regard to usefulness. Natural selection is non-random with respect to advantageous inherited traits because those traits improve reproductive success. Hence A is correct; B, C and D make incorrect generalisations.
Frequently asked questions
What is the correct answer to this question?
Genetic drift is linked with chance and natural selection with adaptation
Why is this the correct answer?
Both genetic drift and natural selection can change allele frequencies, but their causes differ. Genetic drift is a random change produced by chance, especially in small populations, and it may increase or eliminate a trait without regard to usefulness. Natural selection is non-random with respect to advantageous inherited traits because those traits improve reproductive success. Hence A is correct; B, C and D make incorrect generalisations.
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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