Which of the following statements regarding heterochromatin is correct.
Statement 1 - Heterochromatin is transcriptionally active.
Statement 2 - When stained it appears darker than the euchromatin.

Statement 1 is correct but statement 2 is incorrect.

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Statement 1 is incorrect but statement 2 is correct.

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Both statements are correct

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Both statements are incorrect.

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Solution

The correct option is D Statement 1 is incorrect but statement 2 is correct.
Heterochromatin is densely packed chromatin and is considered inactive as it is inaccessible to various Polymerases. Its dense packaging is also responsible for its comparatively darker appearance than the euchromatin when stained/dyed.
So, the correct answer is ‘Statement 1 is incorrect but statement 2 is correct.’

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