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An XY sex chromosome mechanism in a mantid with achiasmatic meiosis

✍ Scribed by M. J. D. White

Publisher: Springer
Year: 1975
Tongue: English
Weight: 340 KB
Volume: 51
Category: Article
ISSN: 0009-5915
DOI: 10.1007/bf00285811

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✦ Synopsis

An Australian mantid, Ima fusca, with 2n male equals 34, shows achiasmatic meiosis in the male, as in other Australian members of the subfamily Iridopteryginae. It is, however, unique among approximately 104 mantid species that have been studied cytologically, in having an XY sex chromosome mechanism. The X and Y chromosomes are not associated as a bivalent in first metaphase, but arrange themselves opposite one another on the spindle and regularly pass to different poles at first anaphase.

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