If during development a clutch of ZZ male eggs gets baked by too much Australian sun, the high temperature overrides their chromosomal sex and ZZ males switch sex to female. These sex-changed ZZ females have a unique constellation of male-like and female-like physical and personality traits. They lay twice as many eggs, yet their behaviour is more in line with male dragons – they’re bolder, more active and their temperature is higher. This novel variation allows genetic or sex-reversed female dragons to respond differently to a more diverse range of environmental pressures, giving them an
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