hey biff...I'm no genetics genius, in fact, much of the in depth information to do with multiple Alleles, chromosomes, co-dominance, incomplete dominance, pretty much escape me. But I think, that a true female, sexually reversed via silver thiosulphate(that term doesn't sound right), gibberllic acid, or some other chemical process, won't have a a male chromosone, "IF" it came from a true female, and NOT a hermie.
I believe that is the basis of feminised seeds. No male chromosone.