Liberation of Nuclei and Achromatic Figures from Maize Endosperm

The Achromatic Figure During Mitosis in Maize Endosper

“…6, 7. A stage in which chromosome arms, as well as centromeres, lie in a common plane has been illustrated in another paper dealing with the same material (Persidsky and Duncan, 1957). 17, the centromere regions are near a common plane, although the chromosome arms extend poleward.…”

“…3). The configuration of polar cap and nucleus which presumably preceded the formation of the unipolar and multipolar spindles, illustrated by Persidsky and Duncan (1957), might well have been different from the usual orientation. A prophase nucleus of the 25-35 p, size range may have three or more caps at various positions on its surface.…”

“…The anomalous spindle illustrated by Persidsky and Duncan (1957) was apparently multipolar and contained more than 30 presumably two-stranded chromosomes. They belong to at least three size ranges.…”

“…The details of this technique have been described by Persidsky and Duncan (1957). The material was transferred to 70 per cent alcohol and stored until it was examined cytologically more than a year later.…”

“…Permanent preparations could be made by mounting a small drop of this suspension under a cover slip. The details of this technique have been described by Persidsky and Duncan (1957).…”