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. 1996 Sep;105(3):190-6.
doi: 10.1007/BF02509500.

Genomic dispersion of 28S rDNA during karyotypic evolution in the ant genus Myrmecia (Formicidae)

H Hirai  1 , M T Yamamoto, R W Taylor, H T Imai
Affiliations

Genomic dispersion of 28S rDNA during karyotypic evolution in the ant genus Myrmecia (Formicidae)

H Hirai et al. Chromosoma. 1996 Sep.

Erratum in

  • Chromosoma 1997 Apr;105(6):380-1

Abstract

The chromosomal localization of 28S rDNA was investigated in 16 speices of the Australian ant genus Myrmecia, with 2n numbers ranging from 4 to 76, using the fluorescence in situ hybridization method and karyographic analysis. A unique phenomenon was observed: the number of chromosomes carrying 28S rDNA increases from 2 in species with low chromosome numbers to 19 in species with high chromosome numbers. This is termed rDNA dispersion. Centric fission and a reciprocal translocation that occurs in C-bands were detected as the major mechanisms involved in rDNA dispersion.

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