Microevolution, or Evolution at Its Smallest Scale, Occurs When

question 58

Multiple Choice

Microevolution, or evolution at its smallest scale, occurs when

• A) an individual's traits change in response to environmental factors.
• B) a community of organisms changes due to the extinction of several dominant species.
• C) a new species arises from an existing species.
• D) a population's allele frequencies change over a span of generations.

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Definitions:

Internal Anal Sphincter

The innermost muscle of the anus, responsible for maintaining continence and controlling the expulsion of feces.

Urge To Defecate

The natural sensation of needing to pass stools from the body.

Multiple Sclerosis

A chronic autoimmune disease affecting the central nervous system, leading to varying levels of physical and cognitive disabilities.

Bowel Incontinence

An inability to control bowel movements, causing involuntary passage of stool.