Backward chromosome movement in crane-fly spermatocytes after UV microbeam irradiation of the interzone and a kinetochore

Cell Biol Int. 2004;28(4):293-8. doi: 10.1016/j.cellbi.2004.01.007.


Single anaphase chromosomes (in crane-fly spermatocytes) moved backwards after double irradiations with an ultraviolet light (UV) microbeam, first of the interzone and then of a kinetochore: the chromosome irradiated at the kinetochore moved backwards rapidly, across the equator and into the other half-spindle. High irradiation doses at the kinetochore were required to induce backward movement. Single irradiations of kinetochores or interzones were ineffective in inducing backward movements.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anaphase / physiology
  • Anaphase / radiation effects*
  • Animals
  • Chromosomes / physiology
  • Chromosomes / radiation effects
  • Diptera / cytology*
  • Kinetochores / physiology
  • Kinetochores / radiation effects*
  • Male
  • Spermatocytes / cytology
  • Spermatocytes / radiation effects*
  • Spindle Apparatus / physiology
  • Spindle Apparatus / radiation effects*
  • Ultraviolet Rays