Instead of breeding females (XX) with regular male tilapia (XY), which will create both male and female offspring, we create (YY) with temperature. Breeding a YY male with a female results in a 98% male population, that always works.
Because the male provides the Y-chromosome that will determine the offspring’s gender, we breed YY males to ensure all male offspring
NMT™ are produced by crossing a YY male with a normal female (XX) from a separate mixed sex line.
By crossing two different lines for NMT™ production, the NMT™ line itself is never an inbred fish.