  Quasars of high redshift may be ejected from a nearby active galaxy of low
redshift. This physical association then leads to the suggestion that the
redshifts of quasars are not really an indication of their distances. In this
investigation, it is argued that the high redshift can be due to the
gravitational redshift as an intrinsic redshift. Based on the proposed
local-ether theory, this intrinsic redshift is determined solely by the
gravitational potential associated specifically with the celestial object in
which the emitting sources are placed. During the process with which quasars
evolve into ordinary galaxies, the fragmentation of quasars and the formation
of stars occur and hence the masses of quasars decrease. Thus their
gravitational potentials and hence redshifts become smaller and smaller. This
is in accord with the aging of redshift during the evolution process. In some
observations, the redshifts of quasars have been found to follow the Karlsson
formula to exhibit a series of preferred peaks in their distributions. Based on
the quasar fragmentation and the local-ether theory, a new formula is presented
to interpret the preferred peaks quantitatively.
