When you clone, you take your cuttings just before you go to 12/12 you need to prune the smaller branches that will not turn into turn into big cola's and will depriving energy from the main cola's. At this point you will not know if it is male or female but you will soon by the mothers in the flower box when sex is known keep the females discard the male cloans. The reason for this is you want to keep the genetics going until you have time to sample the final product. It sucks to grow some bud then smoke it and find out it some of the best you ever had, now it is gone forever because you never took a cutting to keep the genes going.