We have learned a lot about genes in recent decades. It is no exaggeration to say that the educated reader today has access to more information about genetics than the top research minds had a mere 50 years ago. But what, exactly, do we all know – how accurate is our understanding?
That phrase is used as a metaphor to explain anything and everything. Everyone knows what it means: something so hard-wired into us as to be almost immutable. And that idea of DNA as defining our fundamental characteristics and potential is rampant in the popular press – hardly a week passes without some excited report of the discovery of the genes for this or that – from happiness to schizophrenia, musicality to intelligence...
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