Why are acquired traits alone not considered the main basis of evolution?
Answer and explanation
Correct answer: They usually do not change genes in reproductive cells
An acquired trait develops during an organism’s lifetime because of use, exercise, nutrition, injury, or environmental conditions. Evolution depends mainly on heritable variations, which arise from changes or recombination in genetic material passed through reproductive cells. Since an acquired change usually does not alter those genes, it is not normally transmitted to offspring. Therefore, option A is correct; the other options make absolute or factually incorrect claims.
Frequently asked questions
What is the correct answer to this question?
They usually do not change genes in reproductive cells
Why is this the correct answer?
An acquired trait develops during an organism’s lifetime because of use, exercise, nutrition, injury, or environmental conditions. Evolution depends mainly on heritable variations, which arise from changes or recombination in genetic material passed through reproductive cells. Since an acquired change usually does not alter those genes, it is not normally transmitted to offspring. Therefore, option A is correct; the other options make absolute or factually incorrect claims.
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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