Wrt amino acids and sugars I personally don't have to explain as a good many others have already.

eg: For one, Isaac Asimov in the 1970s wrote at length on this in his role as a non fiction science writer with a Chemistry Phd

> male/female ratios somehow tend to balance at 50/50.

This is different to the case of actual right handed dominance in humans and to L- Vs R- dominance in chirality ...

( Men and women aren't actual mirror images of each other ... )