Why Are These Same Seed Plants Different?

I started a great cfl grow...I will post more pics for you all to crituique.

I was wondering...both of these plants are from a "Big Bud" seed.

One has longer, cleaner, more narrow leaves with sharper looking edges.

The other has fatter, lumpier, broader leaves with more rounded edges.

Whats going on?

These plants are 14 days in. Same amount of lights no nutes.

They were f1's it is not a bad thing.

what is an f1? why isnt it bad? I am glad its good whatever it is.

F1's are first generation cross breeds (hybrids) They have improved vigour.

never mind that is what google is for. So i see F1 is a very good thing. Although does that mean one of my plants takes the trait of the father and the other one the mother?

Also I have been veging under 42w cfls. I noticed little hairs coming from the one plant but it has been lights on 21/ 3 off. Is the color of the light that could be showing me sex traits already? they are definately 2-prong little orange hairs.

There are good f1's and bad ones ? Some phenos when crossed have a predictable out come. Some do not