  Asymmetric mass matrices can induce large RH mixings. Those are non-
measurable in the SM but are there and play an important role in its
extensions. The RH rotations are in particular relevant for the proton decay,
neutrino properties and baryon asymmetry. E.g. large RH mixings lead to kaon
dominated proton decay even without SUSY and could be the reason for a large
neutrino mixing. By studying those phenomena one can learn about the RH
rotation matrices and this can reduce considerably the arbitrariness in the
present fermionic mass study.
