A. master control genes
- In genetics, a master regulator is a gene at the top of a gene regulation hierarchy, particularly in regulatory pathways related to cell fate and differentiation.
- Master regulatory refers to a substance or process that regulates or controls another. In genetics, a master regulatory gene codes for a factor capable of regulating expression of another (downstream) gene.
How they work?
- They produce proteins that act as transcription factors to produce proteins specific to the function of the particular cell type. They are often capable of changing some fully differentiated cells of different types into their particular cell type.
Thus, option A is correct.
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