Centromere ultrastructure in germ-line chromosomes of Parascaris

  title={Centromere ultrastructure in germ-line chromosomes of Parascaris},
  author={Clara Goday and Annarosa Ciofi-Luzzatto and Sergio Pimpinelli},
Ultrastructural analysis of the centromere in germ-line mitotic chromosomes of Parascaris univalens and Parascaris equorum revealed that these chromosomes are holocentric. In thin longitudinal sections of both species the kinetochore appeared as a continuous plate (up to 3.8 μm long) and displayed a layered structure. This structure consisted of electron-dense inner and outer layers (average width 10 nm) separated by a less dense middle layer (25 nm wide), which had transverse electron-dense… CONTINUE READING