Which of the Following Statements About Natural Selection Is True

question 23

Multiple Choice

Which of the following statements about natural selection is true?

• A)Natural selection causes variations to arise within a population.
• B)Natural selection leads to increased likelihood of survival for certain individuals based on variation.The variation must come from outside the population.
• C)All individuals within a population have an equal likelihood of survival.Survival is based on chance.
• D)Natural selection results in those individuals within a population who are best-adapted surviving and producing more offspring.
• E)Natural selection leads to extinction.

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Definitions:

g-Aminobutyric Acid (GABA)

A neurotransmitter in the brain that plays a key role in regulating neuronal excitability and muscle tone.

Norepinephrine

A neurotransmitter and hormone involved in the body's fight or flight response, also implicated in mood regulation.

Acetylcholine

A neurotransmitter in the brain involved in memory and muscle movement.