No, because the insects would still mate. No, because it would not change the offspring mutation rate. Yes, because it would sharply decrease the reproduction rate. Yes, because the males would die.
I gave my students this multiple choice question: The male insects in a population are treated to prevent sperm production. Would this reduce this insect population?

Only one answer is correct among these 4 choices:
- No, because the insects would still mate.
- No, because it would not change the offspring mutation rate.
- Yes, because it would sharply decrease the reproduction rate.
- Yes, because the males would die.

Could you tell me which one is correct?

Yes, because it would sharply decrease the reproduction rate.