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Population cytology of Oedaleonotus - I. The karyotypic fades of Oedaleonotus enigma (Scudder)

Chromosoma, ISSN: 0009-5915, Vol: 25, Issue: 2, Page: 121-140
1968
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The grasshopper Oedaleonotus enigma possesses a neo-XY sex system and the rest of the chromosome complement is highly polymorphic, suggesting recent chromosomal evolution. It contains a fusion between two telocentrics, a centric shift and an extra heterochromatic segment, all of which are polymorphic, and in addition it has B-chromosomes. The fusion polymorphism has a preponderance of heterokaryotypes, and despite frequent inbreeding the other two polymorphisms have binomial frequencies of heterokaryotypes. Male individuals with two neo-X chromosomes and no neo-Y (at least in the germ line) are discussed. © 1968 Springer-Verlag.

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