Which Is Required for Natural Selection to Occur

question 21

Multiple Choice

Which is required for natural selection to occur?

• A) Organisms in a population must have the same traits.
• B) A trait must be heritable so that it is capable of being passed on to future generations.
• C) A trait must decrease survival.
• D) A trait must decrease reproductive success.
• E) A trait must be capable of change within a single individual.

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Definitions:

Cigarette Smoking

The act of inhaling and exhaling the smoke of tobacco or a drug.

Exposure To The Sun

The act of being in sunlight, which can have both beneficial effects, such as vitamin D synthesis, and harmful effects, like skin damage or cancer risk.

Physiological Function

The biological processes that support the activities of living organisms or their parts, such as the heart's blood-pumping action or the digestive system's processing of food.

Muscle Development

The growth and strengthening of muscle fibers through exercise and other physiological processes.