Which of the Following Statements Best Describes a Constitutive Gene

Question

Which of the following statements best describes a constitutive gene?
A) A gene that is expressed in the presence of an inducer
B) A gene that is expressed in the absence of a corepressor
C) A gene that is expressed only in the presence of lactose
D) A gene that is expressed continuously.
E) A gene that is under temporal regulation

Accepted Answer

Constitutive genes are always expressed at a relatively constant level, without regard to environmental conditions or other regulation factors. They are sometimes referred to as "housekeeping genes" as they are responsible for the basic functions of the cell.