im experienced but dont consider myself an expert, but from my understanding male has the chromosomes XY. females have XX. you cross a male and female you have a 50/50% chance of either XY or XX being male or female. now if you stress a female to a certain point, the plant thinks it may be dying so it produces pollen sacks to ensure survival of it's kind. keep in mind that the chromosomes are still XX, they do not change from producing pollen sacks but you could still label it a hermaphrodite since it has both sex organs. so those pollen sacks are carrying the XX chromosome, not XY like a normal male would. since the females are XX and the pollen is from XX, the Y is non existant forcing the plant's seeds to have the chromosomes XX. your resulting seeds should either be females or hermaphrodites. the reason some may be hermaphrodite besides being stressed, is they can carry bad genetics. if you have seeds from the same plant feminized or not and one pollinates another, its similar to how the offspring of incest humans works. they can have mutant genetics. or in the plants case, hermaphrodite seeds.
again im no expert. i have a lot of experience growing and this is what i got thru reading and heard from other ppl on the net. if anyone notices anything inaccurate or if im missing anything please respond. im always open to ppl questioning my knowledge cause it only helps to learn more.