Natural Selection Tends to

question 46

Multiple Choice

Natural selection tends to

• A) increase the commonality of characteristics that enhance survival and reproduction.
• B) decrease the number of individuals in any given population.
• C) lead to an increase in genetic drift.
• D) decrease the likelihood of adaptation.

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Definitions:

Trapezius

A large superficial muscle that extends from the occipital bone to the lower thoracic vertebrae and to the scapula, functioning to move the shoulder blade and support the arm.

Levator Scapulae

A skeletal muscle situated at the back and side of the neck, responsible for elevating the scapula (shoulder blade).

Fan-Shaped

Describes an object, structure, or pattern that spreads out in a shape resembling a fan.

Serratus Anterior

A muscle that originates on the surface of the upper eight or nine ribs and inserts along the entire anterior length of the medial border of the scapula, playing a key role in the movement of the shoulder blade.