If a person develops muscles through exercise, why will this trait not play a lasting role in evolution?
Answer and explanation
Correct answer: It does not change genetic information in reproductive cells
The governing concept is the distinction between acquired and inherited traits. Exercise can enlarge muscles during an individual’s lifetime, but this body change normally does not alter the DNA of the reproductive cells. Since evolution across generations depends on heritable genetic variation, the exercised muscles are not transmitted as a programmed trait to offspring. Thus A is correct; B, C and D confuse acquired changes with genes or fossils.
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What is the correct answer to this question?
It does not change genetic information in reproductive cells
Why is this the correct answer?
The governing concept is the distinction between acquired and inherited traits. Exercise can enlarge muscles during an individual’s lifetime, but this body change normally does not alter the DNA of the reproductive cells. Since evolution across generations depends on heritable genetic variation, the exercised muscles are not transmitted as a programmed trait to offspring. Thus A is correct; B, C and D confuse acquired changes with genes or fossils.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Inheritance.
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