>> It turns out that the Komodo sex determination system means the offspring are always male. > Do you mean when it is _not_ parthenogenenis? How does this wor

>> It turns out that the Komodo sex determination system means the offspring are always male. > Do you mean when it is _not_ parthenogenenis? How does this work? I mean all Komodo offspring produced by parthenogenenis are male even though offspring from usual sexual reproduction in Komodos can be either gender. The reason is that the Komodo sex determination system is logically opposite to that of mammals. Specifically, whereas in mammals, a pair of homologous sex chromosomes XX, produces a female, in Komodos this produces a male, ZZ. (Parthenogenenis means there is also the possibility of Komodo WW embryo but these are not viable.) Happy to hear someone else thinks this is interesting.