A Mutation Occurs in the Promoter of a Protein-Encoding Gene

question 66

Multiple Choice

A mutation occurs in the promoter of a protein-encoding gene.How might this mutation affect the production of the protein encoded by the gene?

• A) The mRNA made from this gene would exhibit the same mutation and therefore would not fold or function properly.
• B) The protein made from the promoter would have a different amino acid sequence and therefore would not function properly.
• C) The promoter might not be recognized by RNA polymerase, so the enzyme would be unable to attach to the promoter and start transcription.
• D) The start codon would be missing from the mRNA made from this gene, so the mRNA could not be translated.

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Definitions:

Sclera

The white outer layer of the eyeball, providing structural support and protection for the eye.

Choroid

A vascular layer of the eye located between the sclera and the retina, which provides oxygen and nutrients to the outer retina.

Cornea

The clear, outer layer at the front of the eye that helps focus incoming light onto the retina.