Where does 1.0 and 0.1 come from?

[Bogertophis]

Ohhhh, that's what the numbers mean.

I always figured 1.0 and 0.1 were gender related, but then I'd see bigger numbers and could never tell if that meant like, number of genes in the animal or something.

So (for example) you see 2.7.4 -that would mean 2 males, 7 females & 4 as-yet unsexed. Easy, right? As I said, the last number (for unsexed) is optional. Short but informative.