I ain't no scientist but I had one (1) Fast Buds Mexican Airlines and I carefully "silvered" two bottom branches daily until the pollen sacs appeared. Bag branches until pollen begins to drop, then cut branches, stick in glass of water collect all pollen. Discard branch(s). Pick a couple of large colas near the top, insert into bag and pollinate the cola(s). Remove and discard bag. Finished the grow and rewarded with 432 beautiful, mature seeds. I've grown a dozen from these seeds with no problems. Mexican Airlines Auto Flower every time! Mendel's Law: Like begats like.