Quote Originally Posted by bigtopsfinn
It's possible to get males with feminized seeds. When you are breeding plants, you would want to isolate the females to make the feminized seeds. However, if you are breeding regular seeds in another room, and get some pollen from a true male on you, then go to the feminized breeding room, it's possible to pollinate the 'feminized' plants with male pollen, resulting in male and female seeds.
Sorry, but seeds properly femmed can not produce males. Period. (otherwise they are not femmed seeds) Cross-contamination is possible, but extremely unlikely from a reputable breeder. Their reputation is on the line with every seed-run they market.

Femming seeds in the home garden, the possibility of cross-contamination increases with every precaution not taken.

IMHO, hermies are usually caused by the inexperienced grower, not the genetics. Granted, there are some weak genetics floating around, but an experienced grower usually has their growroom dialed-in, and takes their plants to harvest without incident.

The chemical/hormonal/steroidal/heavy metal treatments some breeders use on the ladies to stress the pollen from them, can do genetic damage. (gibrellins, colloidal silver...) When I fem, I use light poisoning with great success and no genetic damage. Once in a while I'll use aspirin, but less-frequently now-a-days. (some strains take forever if using light poisoning)

Best not to use femmed seeds for further breeding, unless you've done the breeding yourself, and know the processes (treatments) that were used. Genetic damage can not be fixed, but can be passed-on to successive generations.