What is the basic mechanism by which trithorax and Polycomb complexes maintain e

Question

What is the basic mechanism by which trithorax and Polycomb complexes maintain established patterns of Hox gene expression throughout the remainder of embryonic development?

d. They regulate patterns of histone methylation to keep genes active or inactive.

PLEASE CHOOSE THE CORRECT ANSWER, THANK YOU!

a. They encode transcription factors that regulate Hox gene expression. b. They regulate ribonucleases that control the half-life of Hox mRNA. c. They regulate translation of Hox gene mRNAs.

d. They regulate patterns of histone methylation to keep genes active or inactive.

PLEASE CHOOSE THE CORRECT ANSWER, THANK YOU!

Explanation / Answer

The answer is: d. They regulate patterns of histone methylation to keep genes active or inactive.

Trithorax along with Polycomb complexes methylates and demethylates histones to keep genes active or inactive.

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