  We discuss fermion mass generation in unified models where QCD and
technicolor (or any two strongly interacting theories) have their
Schwinger-Dyson equations coupled. In this case the technicolor (TC) and QCD
self-energies are modified in comparison with the behavior observed in the
isolated theories. In these models the pseudo-Goldstone boson masses are much
higher than the ones obtained in different contexts, and phenomenological
signals, except from a light scalar composite boson, will be quite difficult to
be observed at present collider energies. The most noticeable fact of these
models is how the mass splitting between the different ordinary fermions is
generated. We discuss how a necessary horizontal (or family) symmetry can be
implemented in order to generate the mass splitting between fermions of
different generations; how the fermionic mass spectrum may be modified due to
GUT interactions, as well as how the mass splitting within the same fermionic
generation are generated due to electroweak and GUT interactions.
