Demonstration of Canonic Gonial Mitosis and Meiosis in Parascaris equorum

See allHide authors and affiliations

Science  11 Nov 1960:
Vol. 132, Issue 3437, pp. 1400-1401
DOI: 10.1126/science.132.3437.1400


It is shown that, contrary to what has been held, separate canonic chromosomes, without fusion into a chromatin mass, occur in the meiotic prophase of Parascaris equorum. In mitosis no club-shaped chromosome ends are visible. These results, obtained with a modified fixation procedure, which is described, have been checked by supravital observation.