Abstract
IT is well known that species belonging to the same genus frequently differ in their chromosomal numbers. Special interest is attached to this diversity, since it may furnish a clue to the mode of evolution of the species. Although reduction in number of chromosomes appears to occur fairly frequently, practically nothing is known about their increase in numbers except by polyploidy, which occurs very rarely in animals. The European mole-cricket (Gryllotalpa gryllotalpa L.) is a most interesting example of a progressive increase in chromosome number within the limits of the same species. It would appear that speciation based on diversification of chromosome numbers is here at work.
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KUSHNIR, T. Chromosomal Evolution in the European Mole-Ricket. Nature 161, 531–532 (1948). https://doi.org/10.1038/161531a0
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DOI: https://doi.org/10.1038/161531a0
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