androgenetic alopecia, how it happens

I haven’t found answers to some questions which I would try to describe as clear as possible.  Androgenetic Alopecia causes miniaturization of hair follicle.  I’ve read that miniaturized hair follicle has shorter anagen phase and spends rest of the time in telogen phase.

androgenetic alopecia can cause miniaturization or hair loss without miniaturization. In the later for, it goes into telogen and never comes back