Even so, building this vital skill depends to a large extent on what we learn in life. Epigenetics, the science of how our environ ment affects our genes, tells us that inheriting a set of genes is not in itself enough for them to matter. Genes have what amounts to a biochemical on/off switch; if they are never turned on we may as well not have them. The "on" switch comes in many forms, includ ing what we eat, the dance of chemical reactions within the body, and what we learn.
Even so, building this vital skill depends to a large extent on what we learn in life. Epigenetics, the science of how our environ ment affects our genes, tells us that inheriting a set of genes is not in itself enough for them to matter. Genes have what amounts to a biochemical on/off switch; if they are never turned on we may as well not have them. The "on" switch comes in many forms, includ ing what we eat, the dance of chemical reactions within the body, and what we learn.
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