They do indoor reproductions. Open pollination. They only do this after germination rate drops off with the originals And Angus will always say at the very bottom of the description that they are from an open pollination reproduction.
Regarding genetic drift, my personal feeling is that if you can change a strain by growing it indoors 3 generations then you can change it back to what it was by growing it 3 generations in its original homeland. Genetic drift cannot only go in one direction.
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