G-BANDING AND CHROMOSOME CONDENSATION IN THE ANT, TAPINOMA-NIGERRIMUM

Well-defined G-bands were obtained on metaphase chromosomes from Tapin oma nigerrimum using trypsin and warm 2 x SSC in sequence. The G-bande d pattern allowed the identification of all chromosomes. Evidence for asynchronous condensation of the chromosomes of this species is provid ed. Different banding patterns were obtained when metaphase chromosome s were stained with DA/DAPI alone and with DA/DAPI after a standard G- banding procedure. The G-banding phenomenon is discussed using the res ult obtained.