Synthesis

I think it may be alternating only with the same type monster like fritz would be male female male female but if you did another one, like a Ricky, it'd go to female again, male female male female. O.o stick to one monster to get the alternation maybe?

Yeah this isn't true as bred 2 chimps one after the other and both turned out both male even though one synth cotained all males and other contained all females

There is absolutely no pattern in synthesis or breeding. It is a 50/50 chance of male/female in both no matter what gender is used to synthesize or what order etc. as far as I am concerned.