Backward chromosome movement in crane-fly spermatocytes after UV microbeam irradiation of the interzone and a kinetochore |
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Authors: | Wong Raymond Forer Arthur |
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Affiliation: | Biology Department, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada. |
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Abstract: | 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. |
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