Transcriptional Activator Proteins Function in the Regulation of Eukaryotic Gene

question 12

Multiple Choice

Transcriptional activator proteins function in the regulation of eukaryotic gene expression by:

• A) Mediating the binding of the sigma subunit to RNA polymerase.
• B) Altering the conformation of RNA polymerase.
• C) Binding to specific target sites in chromosomal DNA upstream, within, or downstream of the gene being regulated.
• D) Engaging in protein_protein interactions with core components of the transcription initiation complex.
• E) Both C and D

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Definitions:

Genetic Map

A chart representing the arrangement of genes and genetic markers along a chromosome, used to identify and locate the inheritance patterns of traits.

Dominant Gene

A gene that expresses its phenotypic trait even when heterozygous with a recessive gene, effectively overshadowing the expression of the recessive gene in inheritance.

Recessive Gene

A gene that produces its characteristic phenotype only when its allele is identical and not masked by a dominant allele.

Medial

Positioned toward the midline of the body or an organ.