Hi, they are week 3 of flowering and don't look right to me! They have suffered heat stress and I have had a few males that I removed but not sure if the ones in the pic are turning to male or not
female mj plants dont turn into males btw.
Like Shiva they can show male or female sex.
If you dont see signs of female sex but you see balls its most likely a male to begin with.
if you see girlie parts and balls she's a hermaphrodite, kill it before it grows
Every less than ideal environment can cause hormonal changes in the plant, some sexual confusion, some nutrient lock outs, some ph issues, often resulting in death.
the best beginner guide I know of is jorge cervantes grow bible, free for download google, covers all of this in like one page.