Holocentric chromosomes in meiosis. II. The modes of orientation and segregation of a trivalent

@article{Nokkala2006HolocentricCI,
  title={Holocentric chromosomes in meiosis. II. The modes of orientation and segregation of a trivalent},
  author={Seppo Nokkala and Valentina G. Kuznetsova and Anna Maryańska‐Nadachowska and Christina Nokkala},
  journal={Chromosome Research},
  year={2006},
  volume={14},
  pages={559-565}
}
The modes of orientation and segregation of the sex chromosome trivalent X1X2Y in male meiosis of Cacopsylla mali (Psylloidea, Homoptera) were analysed. Males with an X1X2Y sex chromosome system coexist with males displaying a neo-XY system in populations of this species. The fusion chromosome resulting in the formation of a trivalent in meiosis originates from the fusion of an autosome with the neo-Y chromosome. In the majority of metaphase I cells (92.4%) the X1X2Y trivalent showed co… 

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