Odd leaf shape (back curved) any ideas?

I noticed on my new mother plant (from seed) that it had one single fan leaf where one section was shaped with a back curve. I thought nothing of it (figured some enviromental or minor nute issue). However, all clones taken have shown the same single fan leaf 'trait' (usually seen by the four/fifth internode). Has anyone seen this 'scimitar' shaped leaf on any of their plants? Could it be a genetic trait or something else?
*pics attached*

Grow Info:
Sensi Seeds early skunk (fem - got a nice fruity skunk pheno indoor (tent), in coco (1 to 5 gallons), under clf (babies) and led (flowering), nutes (biobizz line+floranova bloom),

I've seen it and didn't give it a second thought. It's pretty much a non issue.

Thanks for the info. I figured it was nothing bad ..quite like the quirk actually (just interesting how it's seen on one leaf per plant/clone). Wondered if it was something 'generaly' seen ..and I just haven't noticed it before in my plants.

Picture is good for a better answer ,I think i get what your saying Clawing ,cause by a few Different reasons,Heat stress ,Wind Burn,High Humidity.That is not a Problem by doing something to this more damage will be caused than good nowt to worry about

Jha Bless
Tyke

You've been looking at this plant for too long. lol

Down Load it Some Stone Love ,Rory and it will Thank you for it ,