Since Newt's can regenerate body parts, can Newt regenerate his conscience?

Limb regeneration in newts occurs in two major steps, first dedifferentiation of adult cells into a stem cell state similar to embryonic cells and second, development of these cells into new tissue more or less the same way it developed the first time

And since this involves stem cells , don't we have to stick to the 59 or so strains that are already in existence?

And won't the new conscience be genetically identical to the old one?

Doesn't that mean he's doomed to divorce Callista?