3 ms·
The ironic thing - the lactose tolerance mutation is one of the most important survival mechanisms for humanity. So humanity survived because we were able to dr
by venomsnake 12y ago
The ironic thing - the lactose tolerance mutation is one of the most important survival mechanisms for humanity. So humanity survived because we were able to drink and eat milk, cheese and cream and butter.
- dschiptsov 12y agoAs far as I know, there are some enzymes, synthesis of which could be triggered by presence of lactic sugars, so a cell could convert them into ATPs, and those enzymes are encoded in the DNA. My bet is that they are "switched off" after the period of breastfeeding is passed, but could be "re-activated", and this ability to reactivate them is the survival factor.