Which of the Following Statements About Mutations Is False

question 119

Multiple Choice

Which of the following statements about mutations is false?

• A) A silent mutation results in no change in the amino acid sequence of a protein.
• B) According to the neutral theory of molecular evolution, most substitution mutations are selectively neutral and accumulate through genetic drift.
• C) A base substitution mutation in the third codon position is more likely to be neutral than a substitution at the first or second codon position.
• D) Nonsynonymous mutations are virtually always deleterious to the organism.
• E) The rate of fixation of neutral mutations is equal to the mutation rate and is independent of population size.

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Definitions:

Olfactory Receptor

A type of receptor found in the olfactory epithelium, responsible for the detection of odor molecules.

Throat

The front part of the neck, anatomically known as the pharynx, which houses the esophagus, trachea, and vocal cords.

Motion Parallax

A depth cue in visual perception where objects closer to the observer move faster across the visual field than objects further away, aiding in depth perception.

Neural Response

The activity and reactions of neurons in the brain in response to stimuli.