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Genetics and evolution

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Question 24

Which of the following epigenetic modifications lead to the inhibition of transcription (silencing) of a target gene in eukaryotic cells?

  1. Addition of methyl groups to cytosine bases in DNA
  2. Removal of acetyl groups from histones, increasing their net positive charge
  3. Addition of acetyl groups to lysine residues on histones, reducing chromatin condensation

1, 2 and 3

Only 1 and 3

Only 1 and 2

Only 2 and 3

Genetics and evolution Questions

  1. A Level
  2. /Biology
  3. /Genetics and evolution