Identical Twins' Gene Expression Is

question 43

Multiple Choice

Identical twins' gene expression is:

• A)virtually identical throughout life.
• B)totally dissimilar throughout life.
• C)similar when they are young but differs with age.
• D)different when they are young but gets more similar with age.

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Definitions:

Trabeculae Carneae

Muscular ridges on the internal surface of the heart's ventricles.

Aortic Semilunar Valve

A valve in the heart located between the left ventricle and the aorta that prevents blood from flowing back into the heart after it has been ejected.

Chordae Tendineae

Tendon-like cords in the heart that connect the papillary muscles to the tricuspid valve and the mitral valve, preventing their inversion during contraction.

Trabeculae Carneae

Irregular muscular columns that line the interior walls of the ventricles of the heart.