Jelle
regarding your sentence "you can determine the sex in the egg"
Monitors (Comodo dragons included) have heterochromosomes WW and ZW. So you can not change their sex by different temperatures during the egg-incubation (as it is possible with crocs, many tortoises or other reptiles).
regarding your sentence "you can determine the sex in the egg"
Monitors (Comodo dragons included) have heterochromosomes WW and ZW. So you can not change their sex by different temperatures during the egg-incubation (as it is possible with crocs, many tortoises or other reptiles).