Ch 7. Control of gene expression (vocab)

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Ch 7. Control of gene expression.

gene regulatory protein

Any protein that binds to a specific DNA sequence to alter expression of a gene.

helix-turn-helix

A structural motif common to many DNA binding proteins

operon

A group of consecutive prokaryotic genes transcribed from a single promoter

operator

DNA sequence to which RNA polymerase binds to begin transcription

X-inactivation

Gene silencing on one of the two X-chromosomes in somatic cells of female mammals

DNA methylation

Addition of a -CH3 group to cytosines in CG sequences of vertebrates

Alternative RNA splicing

Different proteins produced from the same gene by combination of different exons

RNAi

Defense mechanism directed against double stranded foreign RNA molecules

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