The Mode of Natural Selection in Which Extreme Phenotypes Are

question 9

Multiple Choice

The mode of natural selection in which extreme phenotypes are less fit than the optimal intermediate phenotype is

• A) directional selection.
• B) disruptive selection.
• C) stabilizing selection.
• D) artificial selection.
• E) uniformitarianism.

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Definitions:

Unconditioned Response

An instinctive, unlearned reaction to an external stimulus that takes place without beforehand learning or conditioning.

Classical Conditioning

A learning process wherein a neutral stimulus becomes associated with a meaningful stimulus, leading to a conditioned response.

Voluntary Behaviours

Actions that are under conscious control, such as walking, talking, or writing.

Immune System

A complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign invaders such as bacteria, viruses, and cancer cells.