Darwin Suggested a Mechanism for Evolution

question 27

Multiple Choice

Darwin suggested a mechanism for evolution:

• A) genes.
• B) natural selection.
• C) sex.
• D) all of the above
• E) none of the above

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Definitions:

Erectile Tissue

Specialized spongy tissue in the body that engorges with blood to produce an erection, such as in penile or clitoral tissue.

Sexual Stimulation

The act of arousing sexual desire, often through physical, psychological, or emotional stimuli.

Testosterone Concentrations

The level of the hormone testosterone present in the blood, relevant for various bodily functions ranging from the development of male genitalia and secondary sexual characteristics to muscle mass and mood regulation.

Negative Feedback

A process in biological systems where the output of a system suppresses or diminishes its activity, helping to maintain stability or homeostasis.