Nondisjunction: localization of the controlling site in the maize B chromosome.
Nondisjunction of the B chromosome in maize has been considered to be controlled by heterochromatin in its long arm. Experiments reported here indicate that the control site actually lies in a short, relatively euchromatic segment distal to the major heterochromatin of the long arm.
Ward
E J
EJ
Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada.