Hermie from seed?

[Ace]

I was wondering if anyone had insight into explaining the occurrence of a hermie from seed? I received 17 seeds, first time grow, threw some into a bucket, and later the rest into a starter kit. After sprouting and transferring the sprouts into five gallon buckets/smart pots, I ended up with 18 plants. The extra plant came up and I watched its growth, starting two branches at the base, and identified it as a hermie a few weeks after flowering. I can only think that because of it's stressed start that maybe the genetics went that way because of a rough start? I remember distinctly that it was like part of a root during germination that I thought just fell off or got separated from one of the others, buried it in soil anyway and sure enough it grew. Weird though right?

 

[Dannyneedlesca]

Just how weird? In my experience, and hard one for me to rap my head around, most hermies just have male flowers on them pull and get out of the grow area just in case.
my issue was weird in of itself first let me say I have made my own seeds a few time and was successful in creating a few hermies myself. I bought theses seeds from singleseed.com a new strain from bomb seed , "CBD BOMB" it seeded without any male's in the room.
As I was only a couple of weeks from harvest I let them go.
They were the only plants to seed in a room full of Ladies. I can only assume they were unstable and sold to public to soon.