In both XY and ZW sex determination systems, the sex chromosome carrying the critical factors is often significantly smaller, carrying little more than the genes necessary for triggering the developme...In both XY and ZW sex determination systems, the sex chromosome carrying the critical factors is often significantly smaller, carrying little more than the genes necessary for triggering the development of a given sex (Annenberg Media, 2004).
In both XY and ZW sex determination systems, the sex chromosome carrying the critical factors is often significantly smaller, carrying little more than the genes necessary for triggering the developme...In both XY and ZW sex determination systems, the sex chromosome carrying the critical factors is often significantly smaller, carrying little more than the genes necessary for triggering the development of a given sex. Other unusual systems include those of the green swordtail (a polyfactorial system with the sex-determining genes on several chromosomes) [13] ; the juvenile hermaphroditism of zebrafish, with an unknown trigger; [13] and the platyfish, which has W, X, and Y chromosomes.
