Chromatin Structure
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MOLECULAR BIOLOGY
Chromatin Structure
Histone Octamer
Histone octamers balance DNA compaction with gene accessibility in a molecular tug-of-war
3 days ago
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What is the primary reason the histone octamer-DNA interaction relies on weak bonds like hydrogen bonds and salt bridges?
To permanently lock DNA in place for maximum stability
To prevent any interaction between DNA and histones
To allow DNA to reposition or temporarily detach for gene regulation
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Nellieger
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BIOLOGY
Molecular Biology
Chromatin Structure
Chromatin's dynamic structure safeguards DNA and regulates gene activity in cells
27 Jan 2026
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How does chromatin structure influence gene expression in eukaryotic cells?
By controlling the accessibility of DNA to transcription machinery through its compactness and modifications
By directly altering the DNA sequence to activate or deactivate genes
By transporting DNA out of the nucleus to the cytoplasm for gene expression
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