  In automatic R-parity conserving SO(10) models, the simplest way to
accomodate realistic fermion masses is to demand that that the light Higgs
doublets be linear combinations of the {10} and {126}-bar grand unified Higgs
representations. We study the realization of this mixed light Higgs property
consistent with doublet-triplet splitting in a minimal model and discuss its
predictions for neutrino masses and implications for proton decay.
