Multiple Choice
CpG islands are groupings of CG nucleotides that are unusual because why?
7. Gene Expression
Epigenetic Regulation of Gene Expression
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Chromatin remodeling factors move nucleosomes by altering the methylation or acetylation pattern.
A
True
B
False
Verified step by step guidance1
Understand the role of chromatin remodeling factors: These are proteins that modify the structure of chromatin, making DNA more or less accessible for transcription.
Differentiate between chromatin remodeling and histone modification: Chromatin remodeling involves repositioning or restructuring nucleosomes, while histone modification involves adding or removing chemical groups like methyl or acetyl groups on histones.
Recognize that chromatin remodeling factors primarily use ATP-dependent mechanisms to reposition nucleosomes, rather than altering methylation or acetylation patterns.
Identify that methylation and acetylation are types of histone modifications, which are typically carried out by specific enzymes such as histone methyltransferases and histone acetyltransferases, not chromatin remodeling factors.
Conclude that the statement is false because chromatin remodeling factors do not primarily function by altering methylation or acetylation patterns; instead, they reposition nucleosomes using energy from ATP.
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