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Heterochromatin (densely packed, dark-staining chromatin) is:
AFound only in prokaryotes
BTranscriptionally active
CAlways located at chromosome telomeres only
DTranscriptionally inactive
Answer & Solution
Correct answer: D. Transcriptionally inactive
**Heterochromatin** = densely packed, **transcriptionally inactive**. **Euchromatin** = loosely packed, transcriptionally active. Both are visible under light microscope but they differ in stain intensity (dark vs light).
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