  We use detailed modeling of stellar populations of nearby galaxies to
calculate population parameters. Our sample of galaxies includes most galaxies
of the Local Group and several more distant giant galaxies. Available data are
sufficient to decompose galaxies into the nucleus, the metal rich core, the
bulge, the halo, the young and old disks, and the dark halo. We compare
mass-to-luminosity ratios and colors of bulges, disks and halos with results of
models of galactic chemical evolution. The luminosity weighted mean of the
mass-to-luminosity ratio of visible stellar population is M/L_B = 4 +- 1.4 in
solar units. This ratio is surprisingly constant for galaxies of very different
absolute magnitude.
