Division of a Nucleus lacking a Nucleolus

IT has been suggested from McLeish's cytological studies of the broad bean, Vicia faba , that a nucleus lacking a nucleolus cannot reproduce 1 . Similarly, Gaulden and Perry 2 have shown that mitosis in the grasshopper neuroblast is permanently inhibited when one of two nucleoli is irradiated w...

Full description

Saved in:
Bibliographic Details
Published in:Nature (London) 1958-06, Vol.181 (4623), p.1597-1598
Main Authors: VON BORSTEL, R. C, REKEMEYER, M. L
Format: Article
Language:English
Subjects:
Cell Nucleolus
Cell Nucleus
Humanities and Social Sciences
Humans
letter
multidisciplinary
Old Medline
Science
Science (multidisciplinary)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:IT has been suggested from McLeish's cytological studies of the broad bean, Vicia faba , that a nucleus lacking a nucleolus cannot reproduce 1 . Similarly, Gaulden and Perry 2 have shown that mitosis in the grasshopper neuroblast is permanently inhibited when one of two nucleoli is irradiated with an ultraviolet microbeam. The attached X attached XY system ( , ) constructed by Lindsley and Novitski 3 in Drosophila provides an opportunity for investigating in another organism the behaviour of a nucleus that is deprived of a nucleolus. Nucleolus organizer regions exist on both the X and Y chromosomes of Drosophila , and none exists on the autosomes. When an female is crossed to an male, four types of zygotes are obtained, each containing the complete set of autosomes, but varying in sex chromosome constitution. With respect to the sex chromosomes, the zygotes are /O, /O, / , and O/O , where O represents the absence of a sex chromosome. The /O become normal females, the /O become normal males, the / become superfemales, and the O/O die during embryogenesis. Hence, 25 per cent of the total embryos should be O/O in character.
ISSN:0028-0836
1476-4687
DOI:10.1038/1811597a0