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Biology
Posted 6 months ago

In different regions of the chromosome, the ratio of histone H1\mathrm{H} 1 to histone H2 A\mathrm{H} 2 \mathrm{~A} may vary, but the ratio of H2 A\mathrm{H} 2 \mathrm{~A} to histone H2 B\mathrm{H} 2 \mathrm{~B} is generally the same. If the amount of H1\mathrm{H} 1 increases in a region of chromatin, what will be its effect on compaction of the DNA and transcription in that region?
A. Transcription in that region will increase.
B. Transcription in that region will decrease.
C. The DNA in that region will become less compact.
D. DNA compaction in that region will be unchanged.
E. Transcription of the DNA in that region will remain the same.
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Answer from Sia
Posted 6 months ago
B
Key Concept
Histone H1 and DNA Compaction
Explanation
An increase in histone H1 leads to tighter DNA compaction, which generally results in decreased transcription in that region.

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