The ratio of cytokinesis during mitosis and meiosis:

Mitosis:
During mitosis, cytokinesis is the final stage of the cell cycle. It is the process of dividing the cytoplasm to form two daughter cells after the nuclear division is complete. The ratio of cytokinesis to the rest of the stages in mitosis is 1:1, meaning that cytokinesis occurs once per cell division.

Meiosis:
Meiosis, on the other hand, is a specialized form of cell division that occurs in sexually reproducing organisms to produce gametes (eggs and sperm). It consists of two rounds of cell division, known as meiosis I and meiosis II. Cytokinesis occurs after each round of division, resulting in the production of four haploid cells.

- Meiosis I:
During meiosis I, cytokinesis occurs after the homologous chromosomes separate during the process of crossing over and independent assortment. This division results in the formation of two daughter cells called secondary spermatocytes or secondary oocytes. The ratio of cytokinesis to the rest of the stages in meiosis I is 1:1.

- Meiosis II:
In meiosis II, the two secondary spermatocytes or secondary oocytes further divide into four haploid cells called spermatids or ova. Cytokinesis occurs again after the separation of sister chromatids. The ratio of cytokinesis to the rest of the stages in meiosis II is also 1:1.

Therefore, the overall ratio of cytokinesis during meiosis is 2:2 or 1:1 for each round of division.

Summary:
- In mitosis, cytokinesis occurs once per cell division, resulting in a ratio of 1:1.
- In meiosis, cytokinesis occurs after each round of division, resulting in a ratio of 1:1 for both meiosis I and meiosis II.
- The overall ratio of cytokinesis during meiosis is 2:2 or 1:1 for each round of division.