Spoiling the joke at the end of the article:

"I don't know how you'll survive when our genes are gone."

The woman has the genes of the Neanderthal that is the mathematic and logic skills, while the boss has the genes of social intelligence. May the day come when she pass away, no intelligence will be left, so he will be in trouble.

Edited: Grammar 3 or more times. I have an additional theory, that allow you to classify yourself, those without Neanderthal genes would never read the last lines since that is too much to ask to such a social intelligence creature. (Just want to add my own joke, sorry for that).