Question

A bacterial gene (gene A) ordinarily makes a protein that binds to DNA. A nonsense mutation of gene A decreases the expression of another gene, gene B. We can conclude that

(A) gene A is a positive regulator of gene B.
(B) gene A is a negative regulator of gene B.
(C) gene B is a negative regulator of gene A.
(D) genes A and B regulate one another.
(E) gene B is a positive regulator of gene A.

Answer 1

Answer: a) gene A is a positive regulator of gene B.

Answer 2

The correct answer is (A) gene A is a positive regulator of gene B.

Step-by-step explanation:

When positive regulation occurs a transcription factor is required to bind at the promoter in order to enable RNA polymerase to start transcription.

RNA means ribonucleic acid and it is a long single-stranded chain of cells that processes protein.