The seed you find in you weed could be 'selfed' meaning the the pant was femal and them made a seed (popped out a male flower). The seeds like this, which are most bagseed from dank bud, is going to be a lot like the bud you got and like 99percent be a female. That is how they make female seeds. You can make a female make male flowers by stressing it out, can be done easy with light schedule.
If it is some stress then it was probably pollenated by a male. These seeds will show variety between all the plants leaning from one partent to the other.
Luda..... DTP