Differences in strain or simply another plant ?

In my grow I see 1 of my 5 plants having a different type of bud growth.
They should all be feminised snow whites.
Though i had one old light bulb of the two I use hanging for a couple weeks(400w hps), it was changed recently, and only 1 of the plants under that light has a different bud growth then the others.

All the buds on that plant look like the image on the left.
While my other 4 plants (even 1 exposed under the same old bulb) all have buds like the one on the right.























Is it a differrent strain ?
Or could it be different due to circumstances of stress or what not ?
Is it a herm ?
Could it be it needs to be harvested sooner ? (the left image)

All the plants started in the same grow (journal in sig)
I have no clue, but both smell nice and have quite some trichomes on them already ...
I probably should get me a microscope to check for coloring.

Anyways, thoughts/insights appreciated.

ever hear the saying: i taught him everything he knows, but not everything i know. kinda like that, its all from the mother but not necessarily all the mother has. a little may be missing in some or all the fem seeds. thats the best i can explain it, hope it helps.

heh, understood, technically speaking, it could be a genetic defect ?

The other plants look to me as if they could grow on a lot more, and that one plant gives me a bit of impression of it being near done.
Kinda unsure about it, it is suposed to be an 8 to 11 weeks flower cycle and I'm in week 5 now.

Not touching the plants soon anyway, but figured I ask around hehe

It's just a different Pheno Type just leaning more towards one parent or the other.

They look so close that they could almost be the same pheno with an ever so slightly different expression.

Some strains have mad crazy diversity within their genetics. I had one Killing Fields that was a tall stretchy girl, 4ft tall with bright purple buds - and another one from the same pack that was short and bushy with green buds that were like golf balls instead of the long foxtail ones on the purple plant.

Alright then, will keep it sepperat after harvest, might be nice to have 2 types of smokes hehe

and thus with a little 'luck' (could call it that as patience is a virtuous bitch) I could indeed have to harvest it sooner

Thanks

The green one I mentioned almost made me trip, whilst the purple one was lazy and relaxing. You might find a genuine difference between yours too. Well worth keeping them separate imo. I bet one is stronger!