Abstract
The chromosomal localization of 28S rDNA was investigated in 16 species of the Australian ant genusMyrmecia, 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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Edited by: D. Schweizer
An erratum to this article is available at http://dx.doi.org/10.1007/BF02529753.
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Hirai, H., Yamamoto, MT., Taylor, R.W. et al. Genomic dispersion of 28S rDNA during karyotypic evolution in the ant genusMyrmecia (Formicidae). Chromosoma 105, 190–196 (1996). https://doi.org/10.1007/BF02509500
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DOI: https://doi.org/10.1007/BF02509500