Nature and distribution of constitutive heterochromatin and NOR location in the grasshopper Phaeoparia megacephala (Romaleidae: Orthoptera).

@article{Pereira2000NatureAD,
  title={Nature and distribution of constitutive heterochromatin and NOR location in the grasshopper Phaeoparia megacephala (Romaleidae: Orthoptera).},
  author={L. G. S Pereira and Maria Jos{\'e} de Souza},
  journal={Cytobios},
  year={2000},
  volume={103 403},
  pages={111-9}
}
The constitutive heterochromatin (CH) of Phaeoparia megacephala was studied using C-banding and fluorochrome staining (CMA3, DAPI and acridine orange). The nucleolar organizer regions (NOR) were identified with silver staining. The chromosome complement of this species was 2n = 23, XO in males, and 2n = 24, XX in females. The CH was pericentromeric in all chromosomes. L1, L2, L3 and X chromosomes showed large blocks of CH, while the medium and small chromosomes had small blocks. The staining… CONTINUE READING

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