In  a study of cichlid in
   Lake Tanganyika

   were   examined   for  short  interspersed  elements  to  track  their
   evolutionary relationship.
<LI> Photograph  of an agarose gel showing PCR fragments generated from
primers  that  flank  the  AFC  family  of  SINES. Large fragments
containing   this  family  are  present  in  all  members  of  the
Lamprologini  tribe of cichlids (lanes 9-20). DNA from the species
in lane 2 has a similar, but shorter fragment, which may represent
another repetitive sequence. DNA from other species (lanes 3-8 and
21-24) produce short, non-SINE-containing fragments.
<LI> A  Southern blot of the gel probed with DNA from the AFC family of
SINES.  AFC is present in DNA from all species in the Lamprologini
tribe  (lanes  9-20), but not in DNA from other species (lanes 2-8
and 21-24).
<LI> A second Southern blot of the gel probed with the genomic sequence
at  which  the AFC SINE inserts. All species examined (lanes 2-24)
contain   the   insertion   sequence.   The  larger  fragments  in