Two months later, Pääbo's team published a draft sequence of the Neanderthal genome. Noticing that a certain quantity of DNA is common to both Neanderthals and modern humans whose ancestors had moved beyond Africa, Pääbo's team announced that it was likely that a certain degree of sexual promiscuity had characterized relationships between Neanderthals and humans in the course of their many millennia together, side by side, on the planet Earth.
— photo Jochen Tack/Alamy
That idea doesn't surprise me at all. On the contrary. I can well imagine a randy Cro-Magnon gentleman running into a horny Neanderthal lady, on his way home from the hunt at the end of a wintry afternoon, and paraphrasing in his imagination the well-known Canada Dry words: "It looks like whisky, smells like whisky, and tastes like whisky."
Now, I learn today from The Guardian [access] that certain sourpuss scientists are abandoning this delightful idea of intertribal rock 'n' roll. They suggest that the DNA stuff shared by Neanderthals and us humans was surely a remnant of code that existed already in our most recent common ancestor, half a million years ago, before we had differentiated into Neanderthals and humans. Their reasoning is perfectly plausible, but it strikes me as somewhat puritanical. I far prefer the friendly idea of a whole lotta prehistoric shakin' goin' on.