You Have Identified a Mutation in a Gene That Seems

question 52

Multiple Choice

You have identified a mutation in a gene that seems to decrease transcription of another gene 2000 bp away from the mutation site. What regulatory sequence, which may be found within another gene, has likely been mutated in this instance?

• A) core promoter
• B) enhancer sequence
• C) homeodomain motif
• D) proximal elements
• E) upstream activator sequence

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Definitions:

Normal Behavior

actions or reactions of an individual or group that are considered typical or expected within a specific culture or society.

Recessive

A genetic characteristic that is expressed in an organism's phenotype only when two copies of the gene responsible for the trait are present.

Phenotype

The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Homozygous

Referring to an individual having two identical alleles for a particular gene or trait.