  We make a systematic theoretical analysis of the masses and their variation
with energy by solving the renormalization group equation (RGE) in the Minimal
Supersymmetric Standard Model (MSSM). The unification fermion masses of around
115 GeV at GeV scale has been derived by Deo and Maharana. Here we undertake
the unfinished but the important task of calculating the masses and their
running. The unification mass and group theoretic constants for the model are
known. The top mass and its descent is studied very carefully. We find that the
Ramond,Roberts and Ross value of the Wolfenstein parameter is nearly equal to
0.22. When raised to integral powers, the whole mass spectra of the remaining
eleven fermions are obtained. We deduce formulas and plot them for all the 12
fermions as they vary from $t=log \frac{\mu}{M_z}=0$ to $t_X=33$; the GUT mass
being $M_X=2.2\times 10^{16}$ GeV.
