When is heterochromatin formation advantageous for an individual? A. When it inactivates -globin gene B. When...
When is heterochromatin formation advantageous for an individual? A. When it inactivates -globin gene B. When it inactivates an X-chromosome C. When it forms in the coding region of an essential gene C. When it forms in the regulatory sequence of an essential gene
Homework Answers
Answer
Choice B - when it inactivates an x- chromosome
Explanation: Silencing of X chromosome or Xi is done by repressive heterochromatin, this may result in the compacting of the DNA of Xi that prevents the expression of most genes.
So during X-chromosome inactivation silencing of Xi by heterochromatin takes place that helps to prevent the inactivation of genes of Xi DNA. Where normal active X chromosome express their genes.
Hope it will helps to you. All the best
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When is heterochromatin formation advantageous for an
individual? A. When it inactivates -globin gene B. When...
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