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:

Clavicle

A long bone that serves as a strut between the shoulder blade and the sternum or breastbone.

Collarbone

The collarbone, also known as the clavicle, is a long bone that serves as a strut between the shoulder blade and the sternum or breastbone, playing a crucial role in the mobility and stability of the shoulder.

Salter-Harris Fracture

A classification of fractures that involve the growth plate (physis) of a bone in children and adolescents.

Epiphyseal Plate

A growth plate located at each end of long bones where new bone tissue is produced during growth.