Funny you should mention DNA. ( ... BTW, this is an atrocious fantasy-classical depiction of the DNA molecule, just as are the depictions shown in the new COSMOS ... )
I note that “It’s in our DNA.” and such expressions have entered the lexicon, usually to describe habitual or acquired characteristics. Consider today’s ( 5/22/14 ) DILBERT for example, with the line “PERHAPS THEY’RE SENSING THAT YOU HAVE TROLL DNA.” ( Cartoon caps in original. ) The next panel continues, “DID YOUR MOM EVER LIVE UNDER A BRIDGE?”
What are we to make of this? The popular discourse has transgressed all bounds of science and logic.