Change in the Allele Frequency Due to Chance Alone Is

question 52

Multiple Choice

Change in the allele frequency due to chance alone is known as  

• A) inbreeding.
• B) genetic drift.
• C) founder effect.
• D) bottlenecks.
• E) gene flow.

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Definitions:

Midbrain

The middle portion of the brainstem, involved in functions such as vision, hearing, motor control, and sleep/wake cycles.

Cranial Nerves

Twelve pairs of nerves that emerge directly from the brain, not the spinal cord, and pass through various foramina of the skull to innervate the head, neck, and visceral organs directly.

Medulla Oblongata

A portion of the brainstem responsible for autonomic functions such as breathing, heart rate, and blood pressure control.

Midbrain

A part of the brainstem involved in functions such as vision, hearing, motor control, sleep/wake, arousal (alertness), and temperature regulation.