Why can offspring of mice still be born with tails even after tails are cut for many generations?
Answer and explanation
Correct answer: Because cutting the tail does not change hereditary information in gametes
The governing concept is that acquired changes in body cells are generally not inherited. Cutting a mouse’s tail removes or changes a body part, but it does not alter the DNA in its sperm or egg cells. Therefore, the genetic instructions for tail development can still pass to offspring, which may be born with tails. Option A is correct; B, C, and D contradict basic ideas about gametes, development, and heredity.
Frequently asked questions
What is the correct answer to this question?
Because cutting the tail does not change hereditary information in gametes
Why is this the correct answer?
The governing concept is that acquired changes in body cells are generally not inherited. Cutting a mouse’s tail removes or changes a body part, but it does not alter the DNA in its sperm or egg cells. Therefore, the genetic instructions for tail development can still pass to offspring, which may be born with tails. Option A is correct; B, C, and D contradict basic ideas about gametes, development, and heredity.
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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