2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/186823We discuss some recent developments in SUSY Grand Unified Theories based on the gauge group SO(10). Considering renormalisable Yukawa couplings, we present ways to accommodate quark and lepton masses and and mixings.7 pages, 1 figure, contribution to XXXI International Conference of Theoretical Physics, Matter to the Deepest: Recent Developments in Physics of Fundamental Interactions, Ustron, 5-11 September 2007, PolandHigh Energy Physics - Phenomenologytext