Q9 / 180 · AIIMS 2018 (26 May) · Botany

Assertion: The whole chromatin is not functional. Reason : Heterochromatin does not take part in transcription.

  • Correct answer
    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If both assertion and reason are false.

Solution

The whole chromatin present in the nucleus is not functional because only a portion of chromatin called euchromatin takes part in transcription or RNA formation and hence protein synthesis. Heterochromatin does not possess active genes to take part in transcription.

Hence, the correct answer is option: 'A'.

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