Microevolution,or Evolution at Its Smallest Scale,occurs When

question 37

Multiple Choice

Microevolution,or evolution at its smallest scale,occurs when

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

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Definitions:

Complex Coordination

The integration of different functions and activities within an organism or system to achieve a common goal efficiently.

Thirst

An essential sensation prompting the need to drink fluids, triggered by the physiological mechanisms in response to dehydration or increased salt concentration in the blood.

Appetite

The natural desire to satisfy a bodily need, especially for food.

Hypothalamus

A region of the brain that regulates numerous bodily functions, including temperature, thirst, hunger, sleep, mood, and the release of hormones.