Hi (Got to get my 2cents in)
When I grow from seed, I always take at least 2 clones from each of them, while in the Veg grow.
Be sure to lable them.
As already stated, when the sex is known, throw away the males.
I don't throw away any of the clones until I finish flowing and know which were the best producers or have the characteristics I want, IE: tall, short etc.
Hope this helps.
Ps: I blant them in 10 gal storage bins from K Mart $4.60 each, the lids make great trays to set them in.
I have 4 mother plants, WW, Sour D, Soma and The Church.
I am continally taking clones looking for the Queen of Queens.