Springer Online Journal Archives 1860-2000
Abstract Profiles of kinetochores of Luzula appear fibrillar, less electron-dense than the rest of the chromatin, and are located in recesses on the poleward surfaces of the chromosomes. Cyperus kinetochores also appear less electron-dense than the majority of the chromatin; but Cyperus kinetochores are not as distinct as those of Luzula and are not located in recesses. Serial sections reveal that the non-localized kinetochores of both Luzula and Cyperus consist of several packages of kinetochore material along the poleward surfaces of the chromosomes instead of being truly diffuse as suggested by earlier light microscopists. Interchromosomal connections are observed, but no structural relationships to the non-localized kinetochore condition are evident.
Type of Medium: