molecular biology

3 articles · All tags

• What Is Epigenetics? How Genes Switch On and Off
  Epigenetics explains how chemical marks on DNA and its packaging proteins switch genes on or off without changing the DNA sequence, which is why cells differ.
• DNA Replication
  The semiconservative process by which cells duplicate their DNA before division, driven by helicase, polymerases, and Okazaki fragments.
• CRISPR-Cas9
  A programmable genome-editing tool derived from a bacterial immune system that makes targeted DNA changes possible.