Postzegelforum.com

Cannabis carries sex chromosomes much like mammals do, with females as XX and males as XY, which is the reason a regular cross lands near an even split. Pollen carries either an X or a Y, so the male decides the sex of every seed. The chromosome side of it is explained without jargon at https://breederregularseeds.com, along with why environmental stress can override the picture in feminized stock. Understanding that made the whole reversal process click for me.