[Kinetic study of the accumulation of anaphasic abnormalities in a synchronized population of meristematic root cells of Allium sativum L].

A population of meristematic root cells of Allium sativum L. is previously synchronized thanks to Hydroxyurea. When it reaches mitosis, this population undergoes the action of different antimetabolic drugs which slightly check the normal operating of the mitotic spindle without preventing chromosomic separation. In such conditions we can obtain from 30 to 50 slightly altered anaphasic cells out of 1000 cells. This is enough to allow us to contemplate the electronic microscope study of these abnormalities.