By What Mechanism Does a Second Male Mating with a Female

question 4

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 semen has chemicals that kill the first male's sperm.
• B)The accessory fluids from the second male's semen can displace stored sperm from competing males.
• C)The second male will have larger testes and so produce larger numbers of sperm.
• D)The second male is larger than the first male.

---

Definitions:

Conditioning

A process of behavior modification by which a subject comes to associate a desired behavior with a previously unrelated stimulus.

Capacity

The maximum amount something can contain or the ability to perform, produce, or hold.

Classical Conditioning

An educational process that happens when a naturally occurring stimulus is linked with a stimulus from the environment.

Stimulus

Any object or event that elicits a sensory or behavioral response in an organism.