My one sprout grew the two smooth leaves, the two beginnings of pot leaves and grew..

[jolly green giant]

the main root of a cannabis plant needs at least 4-5 inches of unimpeded growth, or it stands a good chance of being male.
put them in pots as big as possible for your growing space. mine are at least 14-18 inches wide and about 24 inches deep..........bigger pot...bigger plant.. given the right amount of light.
go to overgrow.com faq for techniques on transplanting.