most plants, if you leave them grow naturally will reach for the sky, listen to compo, a bit of lst (low stress training will stop them growing to these heights). there is also SOG/SCROG to look into, or by stringing them down.
look at my last crop... skunk #1 (hybrid) never grew much higher from veg because i stopped them from doing so

start of flowering...

end of flowering...

as u can see, they never got much higher, so it isnt really a question of genetics, its whether or not you employ the training methods.
you increase yields this way too!