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Euchromatin differs from heterochromatin in being

  • A.less condensed and generally transcribed
  • B.more condensed and generally transcribed
  • C.less condensed and never transcribed
  • D.found only in prokaryotic cells

Answer: A

Open chromatin gives the transcription machinery access to the DNA, while heterochromatin is packed too tightly to be read. The distinction can be seen directly in electron micrographs as light and dark regions. The dark regions correspond to the more tightly packed heterochromatin.

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