Why do strong muscles of an athlete usually not pass directly to his offspring?
Answer and explanation
Correct answer: Because change due to exercise does not change genetic information in gametes
The governing idea is the difference between acquired characteristics and inherited genetic information. Training enlarges an athlete’s muscles by changing body tissues and performance during life; it usually does not alter the DNA of sperm or eggs in a way that encodes those muscles. Therefore the developed muscles are not directly transmitted. Option A is correct, while B and C are biologically false and D describes no normal effect of exercise.
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What is the correct answer to this question?
Because change due to exercise does not change genetic information in gametes
Why is this the correct answer?
The governing idea is the difference between acquired characteristics and inherited genetic information. Training enlarges an athlete’s muscles by changing body tissues and performance during life; it usually does not alter the DNA of sperm or eggs in a way that encodes those muscles. Therefore the developed muscles are not directly transmitted. Option A is correct, while B and C are biologically false and D describes no normal effect of exercise.
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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