Thanks for the pictures.
Maybe there was a miscommunication. I didn't see any sexing in the picture.
In any event, I called a friend to see it he's ever seen a plant grow in a dixie cup to see sexing. He said he had not but it could be possible. The amount of time and effort, though, makes it impractical. "If it's done, it's done as a novelty, not because you are looing to support a habit."
I looked through some old text books and didn't see anything mention that small of a growing area. I guess if someone is so inclined to do something like this then it might be possible...but, good God...it's not realistic.
I see your challenge, though.
In the mean time, thanks DoeEyed! I still learn every day.