Given a Population That Contains Genetic Variation, What Is the Correct

question 44

Multiple Choice

Given a population that contains genetic variation, what is the correct sequence of the following events, under the influence of natural selection?
1) Well-adapted individuals leave more offspring than do poorly adapted individuals.
2) A change occurs in the environment.
3) Genetic frequencies within the population change.
4) Poorly adapted individuals have decreased survivorship.

• A) 2 → 4 → 1 → 3
• B) 4 → 2 → 1 → 3
• C) 4 → 1 → 2 → 3
• D) 4 → 2 → 3 → 1
• E) 2 → 4 → 3 → 1

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Definitions:

Diametral Pitch

A value describing the ratio of the number of teeth of a gear to the diameter of the pitch circle, used in the design and specification of gears.

Circumference

The perimeter or boundary line of a circle, often measured to understand the size or to describe the distance around it.

Bevel Gear

A type of gear where the axes of the two shafts intersect and the tooth-bearing faces of the gears themselves are conically shaped, often used in differential drives.

Addendum

The radial distance from the pitch circle of a gear to the top of the teeth.