Post meiotic formation of a tetrad. Each of the four cells produced by meiosis are now separated from each other by cell walls. Each of the four nuclei contain the haploid number of chromosomes.Once...

4 Prophase I of meiosis, substage pachytene in a diploid lily pollen mother cell. The nucleoli are once again round, two are visible. All of the homologous chromosome regions are fully paired, appe...

Prophase I of meiosis, diakinesis substage in a diploid lily pollen mother cell. One bivalent is shown. It has 6-8 crossovers (also called chiasmata). The long arrows point at definite chiasmata; ...

Metaphase I of meiosis, polar view, in a diploid lily pollen mother cell. Because of the polar viewpoint, the metaphase plate is not apparent but the 12 bivalents are very clear as are the regions o...

Telophase II in a diploid lily. The segregated chromomosomes on the left side of the micrograph are a little in advance of the ones on the right side . The nuclei on the left are reforming their nucl...

Nephrotoma suturalis spermatocyte (crane fly sperm cell) during metaphase in meiosis. Image was captured using a newly developed orientation-independent differential interference contrast technique. ...

This is one of 4 grouped time lapse movies (CIL 11958-11962) revealing the responses of a meiotic oocyte spindle to various forms of micromanipulation by a glass microneedle. The needle is inserted, ...

This is one of 4 grouped time lapse movies (CIL 11958-11962) revealing the responses of a meiotic oocyte spindle to various forms of micromanipulation by a glass microneedle. The needle is inserted, ...

The time lapse movie spans fertilization, ooplasmic segregation, and early divisions in the egg of the tunicate Phalusia mammilata. Contrast is provided by both polarizing microscopy and differential...

This is one of 4 grouped time lapse movies (CIL 11958-11962) revealing the responses of a meiotic oocyte spindle to various forms of micromanipulation by a glass microneedle. The needle is inserted, ...