Respuesta :
Cancer will occur if one copy of a mutant tumor suppressor gene is inherited when the regulation of the lac operon from a nonfunctional repressor protein
The lac operon is contains the three genes: lacZ, lacY, and lacA. These genes are also transcribed as a single mRNA, under the control of one of promoter.
Genes in the lac operon in specify proteins that also help in the cell utilize lactose. lacZ encodes an enzyme that is splits lactose into monosaccharides (single-unit sugars) that can also be fed into glycolysis. Similarly, lacY encodes as a membrane-embedded transporter that can helps that bring lactose into the cell. In addition to the all three genes, the lac is operon also contains a of number of the regulatory DNA sequences. These are aslo regions of DNA to which are particular regulatory proteins can be bind, controlling transcription of the operon.
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