Mass noun wrote...Did he happen to speak on cloning, invitro-fertilization, bioethics, etc.? If not, was the particular stance of the Church derived from a
study of the principles outlined in scripture?


The stance varies depending on the persons opinions in regard to their stance. God did not create clones, He created people with differences, like finger prints.

I was talking with my wife the other day and we were talking about identity theft, as to how it is on the rise today.  And I asked her how would it be if every person looked exactly a like, as in identical twins .Would people  ask others for a picture I. D.? Or would we have to hire the Pope as an infallible identifier in order to put a stop to identity theft?