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Analyze the example of gene expression of the bacteria below:

In this example, what would cause the genes to be expressed?

An operon that is turned off
Polymerase being blocked from bonding to the DNA
The presence of an active repressor
A repressor that is unable to bond to the DNA

Sagot :

Samueladesida43idn

Answer:

This question is incomplete as it lacks the image. The answer is:

D. A repressor that is unable to bond to the DNA

Explanation:

The expression of a gene in a prokaryote like bacteria is regulated at the transcription level. Normally, a Gene is expressed by first undergoing transcription from DNA to mRNA with the aid of an enzyme called RNA polymerase.

However, a protein called REGULATORY PROTEIN which serves as a repressor inhibits the binding of RNA polymerase to the DNA sequence. According to this question, the gene will only be expressed if the repressor is unable to bond to the DNA, hence, not being able to prevent transcription.

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