How Does the Study of Identical Twins Help in Determining

question 54

Essay

How does the study of identical twins help in determining the role of heredity in personality?

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Definitions:

Pronation

The inward roll of the foot during normal motion, or the rotational movement of the forearm that turns the palm downward.

Supination

The outward rotation of the forearm or foot, such that the palm or sole faces upwards or forwards.

Pronation

The inward roll of the foot during normal motion when walking or running, where the outer edge of the heel strikes the ground first and the foot rolls inward.

Muscle Contractions

The process by which muscle fibers produce force and shorten, resulting in movement or maintenance of posture.