Sinsemilla is a combination of two spanish words "Sin" meaning "without" and "semilla" meaning "seed".
That's not marijuana, it's sinsemilla
(as heard in the song "Smoke Two Joints" by The Toys and covered by Sublime)
Male plants shed pollen, female pistils get pollinated, every hair produces a seed.
Background is that ususally you have to sort out the seeds, cause they pop and burn in the spliff. Nasty flavour!
also the cannabisplant invests more of its resources into resin production.
some folks confuse sensee with a strain.