expiermental grow

High,
I am doing my first attempt @ an Indoor grow My plants are Looking healthy they are 36 day's Old Im not sure the strain or strains as I did use 2 diff seed's as well Im not sure if these are male or feamale and I wanna use one as A mother plant.Here are some pics that I hope will help In finding out A Little More Info On them, thanks for Everyone's help in Advance.

I guess what I am asking is can anyone tell if these are male or feamale as well as what strain these are?

you have to wait til you see preflowers or until you switch the lights to 12/12 if you dont know what preflowers are search for it!

Thanks,I know what pre-flower is thanks to this site LOL I have been reading these forums for 2 months and not sure why I never registered.Do you know if there is a way to tell what strain they are?
thanks for all your input

those look sexy.. how many plants do you have in each pot? it looks like 2

what kind of soil are you using?

1 of the pots Have 3 In it 1 has 2 And 1 has 1 In it I am useing An Ontario potting soil as well am fertilizeing them with The Shitz fertilizer a friend got Me @ a head shop but befor he got me that all i had was Shultz 10-15-10 not sure if it was a good idea to switch but the shitz is all natural guano mix

Do you think It was A bad Idea to Switch them from from shultz 10-15-10 liquid fertilizer to the Shitz 7-4-4 organic growth blend? Should I flush and go back to the Shultz and wait to use the Organic growth blend for Budding?