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.

Question

Giuliana Moody

Biology

29 November, 22:06

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.

+3

Answers (1)

Know the Answer?

Noelle Chapman · Answer 1

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

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.