Gene Regulation (VCE SSCE Biology): Flashcards
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Gene regulation
Gene regulation
Control of gene expression
Gene expression
Gene expression
Reading gene info to create functional product (usually protein)
Structural genes code for
Structural genes code for
Proteins for cell structure/function
Repressor proteins do what
Repressor proteins do what
Prevent/decrease gene expression by binding to operator
Activator proteins do what
Activator proteins do what
Initiate or increase gene expression
Operon
Operon
Gene cluster sharing common promoter & operator, transcribed together
trp operon controls
trp operon controls
Tryptophan production
High tryptophan in trp operon causes
High tryptophan in trp operon causes
Transcription of structural genes to stop
Attenuation
Attenuation
Transcription starts but can stop prematurely
Terminator hairpin loop effect
Terminator hairpin loop effect
Stops transcription before structural genes transcribed