Epigenetics: Are genes the new brains?
from Discover Magazine
It's an excellent piece about epigenetics and gene expression — the process by which particular parts of our DNA are "switched on," or off, within cells: Genes can vary their level of activity, as if controlled by dimmer switches. Most cells in your body contain every one of your 22,000 or so genes. But in any given cell at any given time, only a tiny percentage of those genes are active.
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