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Difference between heterochromatin and euchromatin

  1. Heterochromatin is a part of chromosome, a tightly packed form of DNA whereas euchromatin is an uncoiled form of chromatin.
  2. Heterochromatin has tighter DNA packing than euchromatin.
  3. Heterochromatin stains dark in interphase whereas euchromatin stains lightly with basic dyes but stains dark during mitosis, when it is in condensed state during each repetition of the cell cycle.
  4. Heterochromatin contains more number of DNA compare to euchromatin.
  5. Heterochromatin found in eukaryotes whereas euchromatin found in both eukaryotes and prokaryotes.
  6. Heterochromatin is genetically inactive and euchromatin is genetically active.
  7. Heterochromatin is late replicative whereas euchromatin is early replicative.
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