  It is shown that top-bottom-tau Yukawa unification for \mu<0 can be
consistent with (g-2)_\mu and b->s \gamma. This happens for non-universal
gaugino masses which are assumed to be generated by the F-term vev in a
54-dimensional representation of SO(10). The requirement of (g-2)_\mu and b->s
\gamma being within 2\sigma from the experimental central values, together with
the correct relic abundance of neutralinos, leads to rather definite
predictions for sparticle spectrum. In particular, the gluino mass is predicted
to be between 500 and 700 GeV or between 900 GeV and 1.6 TeV.
