All of the following gene products are coded for by constitutive genes except ______.

Question

Quizplus · Accepted Answer

Constitutive genes are those that are always active and not subject to regulation because they are essential for the basic functions of the cell. Histones, aconitase, pyruvate dehydrogenase, and rRNA are all examples of products coded by constitutive genes because they are required for fundamental cellular processes such as DNA packaging, the citric acid cycle, energy production, and protein synthesis, respectively. Lactose (option D) is not a gene product but a sugar molecule. The gene involved in the metabolism of lactose, such as the lac operon in bacteria, is not constitutively expressed but is instead regulated based on the presence or absence of lactose.

All of the Following Gene Products Are Coded for by Constitutive