Choosing the sex?

[Gekambi]

Im sure that somewhere i have read that in some reptile species the sex of the herp being born is based upon what temperature the egg is kept at. This has like a max of 1 degree between the 2 sexes. Am i right in this info, and in the case i am what species does it happen in? Do you think if you were accurate enough you could CHOOSE the sex of your hatchies?
There's alot of IF's there i know but bear with me.

 

[Slats]

Is accurate with crocs

 

[cris]

You can do this with water dragons and a fair few other reptiles. With water dragons it seems fairly reliable(in my limited experience) and there has been research into various other species too.

I havnt heard of this happening in snakes, but that doesnt means it isnt possible.