The movement of chromosomes and the changes in spindle size have been recorded in
living spermatocytes of the grasshopper during the meiotic divisions. Anaphase movement …

The attachment of individual chromosomes to the spindle has been studied by
micromanipulation in functionally normal grasshopper spermatocytes. Prometaphase to …

Two types of unusual motion within the spindle have heen studied in a grasshopper
(Melanoplus differentialis) spermatocyte. The first is the motion of granules placed by …

The relationship of kinetochore orientation and reorientation to orderly chromosome
distribution in anaphase has been studied experimentally by micromanipulation of living …

Thin sections of the testicular follicles of the grasshopper Laplatacris dispar were studied
under the electron microscope. In the primary spermatocytes, during meiotic prophase, three …

The chromosomal axes of the spermatocytes of the grasshopper Melanoplus differentiate
have been studied with a modification of the microspreading procedure used previously …

Kinetochore reorientation is the critical process ensuring normal chromosome distribution.
Reorientation has been studied in living grasshopper spermatocytes, in which bivalents with …

1. The movement of chromosomes at anaphase was measured in living cells of Tamalia,
Protenor and Thelia. The distance between the separating chromosomes plotted against …

Micromanipulation of living grasshopper spermatocytes in anaphase has been combined
with electron microscopy to reveal otherwise obscure features of spindle organization. A …

The mature sperms of many insects, including the grasshopper (Orthoptera), are very much
elongated, needle-like structures. The sperm nucleus is likewise extremely elongated with a …