Anaphase I in a diploid lily pollen mother cell. Homologs have separated and chromosomes, led by their kinetochores are moving to the poles.

Telophase I in a diploid lily. Chromosomes have reached the poles and are beginning to decondense in the two resulting nuclei.

1 Premeiotic G2 in a diploid lily pollen mother cell. Four nucleoli are visible; chromatin is relatively uncondensed except for small segments of heterochromatin.

Metaphase II in a diploid lily. The chromosomes of both nuclei are lined up on the metaphase II plates.

Metaphase I in a diploid lily pollen mother cell. The nuclear envelope is gone and the 12 bivalents can be seen lined up on the metaphase I plate. Counting from the top left and moving to bottom righ...

2 Prophase I of meiosis , leptotene substage in a diploid lily pollen mother cell. Four nucleoli are visible; chromatin has condensed into uniformly thin threads.

Prophase II in a diploid lily. The two cells produced by the first meiotic division are now separated by a cell wall. The chromosomes are condensing.

Anaphase II in a diploid lily. The chromatids have separated and are moving to opposite poles in both nuclei.

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; ...