Mutations That Are Invisible to Selection Are

question 21

Multiple Choice

Mutations that are invisible to selection are

• A) homozygous.
• B) beneficial.
• C) polymorphic.
• D) neutral.
• E) directional.

---

Definitions:

Method of Adjustment

A technique used in psychological experiments where a participant adjusts a variable stimulus until it is perceived as equal to a standard stimulus.

Sensory Threshold

The minimum level of stimulus intensity needed to detect a stimulus or cause a sensory response.

Method of Incremented Stimuli

A technique in psychophysical research where stimuli are gradually increased in intensity to determine the threshold at which a sensation is detected.

Opponent-Process Theory

The Opponent-Process Theory is a psychological and neurological model that explains how the perception of colors is controlled by the operation of opposing neural systems.