Which of the following statements is true regarding dosage compensation?

A) In Drosophila,one of the two X-chromosomes is randomly inactivated in females.
B) In mammals,the genes on the single X-chromosome in a male are transcribed at a higher level.
C)The X-inactive specific transcript is a functional RNA molecule that results in X-inactivation in Drosophila.
D) In C.elegans,dosage compensation results from partial repression of X-linked genes in hermaphrodites.
E) The gene product of the gene maleless is responsible for X-inactivation in mammals.

Question

Which of the following statements is true regarding dosage compensation?

A) In Drosophila,one of the two X-chromosomes is randomly inactivated in females.
B) In mammals,the genes on the single X-chromosome in a male are transcribed at a higher level.
C)The X-inactive specific transcript is a functional RNA molecule that results in X-inactivation in Drosophila.
D) In C.elegans,dosage compensation results from partial repression of X-linked genes in hermaphrodites.
E) The gene product of the gene maleless is responsible for X-inactivation in mammals.

Quizplus · Accepted Answer

In C. elegans, dosage compensation is achieved by reducing the expression of X-linked genes in hermaphrodites by about half, ensuring equal expression levels between hermaphrodites (XX) and males (XO).

Which of the Following Statements Is True Regarding Dosage Compensation