Feminized Seed Production

hi all. I have 7 different strains. Now with me having problems with BC Ice and not being able to clone for a while and now being able to I wanna get into producing feminized seeds from any female strains that I like or wanna make a batch of for backup reasons in case I have to start from seed.

I will be doing the light method or the silver method if I can find some around here but my question is when making fem seeds of a girl will the genetics be different, almost the same or 100% the same from the mom plant?

It will have differing phenotypes, just as if it were pollinate by a true male.
Edit: strictly research based opinion.