Mitosis and mitotic activity in Codium fragile (Suringar) Hariot (Chlorophyceae)

Abstract

Abstract The mitotic cycle and periodicity of mitosis in Codium fragile in culture were investigated, primarily using germlings. In most respects mitosis resembles “normal” mitosis. However, a persistent nucleolus-like body was observed during all stages of division using acetocarmine stain. Attempts to ascertain the chemical nature of this body were unsuccessful. Experiments on the periodicity of mitosis disclosed a series of peaks of mitotic activity which appear unrelated to the time of onset of the light or dark period. Mitosis within any one germling is asynchronous.