Differential Gene Expression and Chromatin Structure
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Differential Gene Expression and Chromatin Structure

Learn how cells with the same genome differentiate into various cell types. This quiz explores the role of histones, nucleosomes, and chromatin structure in gene expression and cell specialization.

Created by
@BrightJasper4064

Questions and Answers

What is the phenomenon called when only one X chromosome is functioning in a mammalian somatic cell?

X chromosome inactivation

What is the structure of the inactive X chromosome during most of the cell cycle?

Heterochromatin

What is the mechanism that converges in inactivating an X chromosome across mammalian groups?

Methylation of promoters

What is the name of the locus on the X chromosome that is transcribed on the inactive X chromosome?

<p>XIST</p> Signup and view all the answers

What happens to the promoter regions of genes on the inactive X chromosome in humans?

<p>They are methylated</p> Signup and view all the answers

What is the product of the XIST locus gene?

<p>An untranslated RNA molecule</p> Signup and view all the answers

When does the inactive X chromosome replicate in the cell cycle?

<p>Later than most chromatin</p> Signup and view all the answers

What is the result of X chromosome inactivation in mammalian somatic cells?

<p>One functioning X chromosome</p> Signup and view all the answers

What is the significance of XIST RNA coating the inactive X chromosome?

<p>It remodels the chromatin</p> Signup and view all the answers

Which of the following is a characteristic of the inactive X chromosome?

<p>It is highly condensed</p> Signup and view all the answers

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