What is a gene?

A) A gene is a sequence of three nitrogenous bases along a DNA strand.
B) A gene is a polypeptide formed by linked amino acids.
C) A gene is a sequence of three nitrogenous bases along an RNA strand.
D) A gene is a portion of a DNA strand that functions as a hereditary unit and codes for a specific protein.
E) A gene is the sequence of tRNAs needed to form a polypeptide.


Answer: D

Anatomy & Physiology

You might also like to view...

Which hormone is not secreted by the stomach or small intestines?

A. Gastrin B. Ghrelin C. Peptide YY D. Somatostatin E. Cholecystokinin (CCK)

Anatomy & Physiology

Which of the following statements is part of Starling's law of the heart?

a. a slightly larger and better-contracting heart will increase stroke volume b. the greater the ventricular stretch, the more forceful the contraction c. an increase in venous return will increase blood flow into the heart d. all of the listed responses are correct

Anatomy & Physiology

In the light-adapted state,

-colors are dull. -we would see better in the dark. -photoreceptors are much less sensitive to stimulation. -photoreceptors are much more sensitive to stimulation. -we can only see color, and not black and white.

Anatomy & Physiology

Acidosis changes the rate and depth of breathing by ____________________ it

Fill in the blank(s) with correct word

Anatomy & Physiology