A Mutation in the IGF2 Gene in Pigs Results in a Threefold

question 4

Multiple Choice

A mutation in the IGF2 gene in pigs results in a threefold increase in the transcriptional activity of this gene in muscle cells; therefore, these pigs are leaner and more muscular. Because this mutation is in the noncoding region of the IGF2 gene, we can infer that:

• A) the IGF2 gene is a prokaryotic gene.
• B) the IGF2 gene is present only in muscle cells but not in adipose (fat) cells.
• C) the mutation changes the amino acid sequence of the IGF2 protein.
• D) the mutation alters the regulatory region of the IGF2 gene.
• E) less IGF2 protein is synthesized in the muscle cells of these pigs.

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Definitions:

Resistance

The refusal to accept or comply with something; in physics, it refers to the property of a material or object that impedes the flow of electrical current.

Type A Personality

Characterized by a constant feeling of working against the clock and a competitive, aggressive, and highly driven nature.

Type B Personality

A personality type characterized by a relaxed, patient, and easy-going nature, in contrast to the more intense and deadline-oriented Type A personality.

Irritable

Easily annoyed or angered, often displaying a tendency to be upset by minor disturbances or inconveniences.