Gene Regulation: Operons and Epigenetics · Zoology

Which epigenetic modification can be reversed?

  1. DNA point mutation
  2. Chromosomal deletion
  3. Histone modification
  4. Gene copy duplication
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Correct answer: Histone modification

Histone modifications such as acetylation and methylation are dynamic and enzymatically reversible. This reversibility allows cells to flexibly regulate gene expression in response to developmental or environmental signals.

Difficulty: Medium Question 17 of 20

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