STOLAINE CASSIDINES (COLEOPTERA, CHRYSOMELIDAE) WITHXypSEX CHROMOSOMES AND A DERIVATIVE SYSTEMXpneoXneoYp
- 1 June 1974
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Genetics and Cytology
- Vol. 16 (2) , 433-440
- https://doi.org/10.1139/g74-045
Abstract
Three species of Cassidines were cytologically studied. Chelymorpha indigesta and C. variabilis, with 10II + Xyp, have a relatively primitive Coleopteran karyotype and the sex chromosomes form a parachute-like bivalent. Botanochara angulata, belonging to the same tribe, Stolaini, presents an exceptional karyotype with a very high chromosome number (2n = 51 ♀) and multiple sex chromosomes XpneoXneoYp. This system has derived from the Xypby a yp-to-autosome translocation.Keywords
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