oh yea the males will have lil ball like shapes start to form at the nodes you will see males first
the females have lil white hairs start to form at the nodes you cant miss em
make sure you get rid of the males asap jus make sure they are defo males
if you dont see any males after a week and a half chances are your plants will be all females i cant garuntee that tho its jus likely.
you should be seeing any males start to form balls very soon so watch out for em