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GENE REGULATION, SANDHYA A 191822016 - Coggle Diagram
GENE REGULATION
MAJOR FACTORS
A constitutive gene is a gene that is transcribed continually as opposed to a facultative gene, which is only transcribed when needed.
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An inducible gene is a gene whose expression is either responsive to environmental change or dependent on the position in the cell cycle.
A housekeeping gene is a gene that is required to maintain basic cellular function and so is typically expressed in all cell types of an organism. Examples include actin, GAPDH and ubiquitin. Some housekeeping genes are transcribed at a relatively constant rate and these genes can be used as a reference point in experiments to measure the expression rates of other genes.
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DEFINITION
Regulation of gene expression refers to the control of the amount and timing of appearance of the functional product of a gene. Control of expression is vital to allow a cell to produce the gene products it needs when it needs them; in turn, this gives cells the flexibility to adapt to a variable environment, external signals, damage to the cell, and other stimuli.
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