2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/190396Neutrino-mass textures proposed at high-scales are known to be unstable against radiative corrections especially for nearly degenerate eigen values. Within the renormalization group constraints we find a mechanism in a class of gauge theories which guarantees reproduction of any high-scale texture at low energies with radiative stability. We also show how the mechanism explains solar and atmospheric neutrino anomalies through the bimaximal texture at high scale.4 pages REVTEX, 1 Postscript figHigh Energy Physics - Phenomenologytext