A bacterial gene (gene A) ordinarily makes a protein that binds to DNA.A mutation of gene A causes an increase in the expression of gene B.We can conclude that

Question

Quizplus · Accepted Answer

Since the mutation in gene A leads to an increase in expression of gene B, it suggests that the protein that is normally made by gene A represses the expression of gene B. Therefore, gene A is a negative regulator of gene B.

A Bacterial Gene (Gene A) Ordinarily Makes a Protein That