By What Mechanism Does a Second Male Mating with a Female

question 12

Multiple Choice

By what mechanism does a second male mating with a female gain an advantage in sperm competition in some insects?

• A) The second male's sperm physically dislodge the first male's sperm and insert themselves in place.
• B) The accessory fluids from the second male's semen is able to displace stored sperm from competing males.
• C) The second male will have larger testes and so produce larger numbers of sperm.
• D) Answers A and B are both correct.

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