Question

What happens first in meiosis?

Answer 1

Meiosis I:

Meiosis I has five stages: Prophase I, Metaphase I, Anaphase I, Telophase I, and Cytokinesis I.

1. Prophase I: The nuclear envelope disintegrates, and chromosomes condense.
2. Metaphase I: The homologous chromosomes get aligned along with the equatorial plate.
3. Anaphase I: The homologous chromosomes get pulled to opposite poles.
4. Telophase I: Spindle fibers get disappeared and the reformation of the nuclear envelope occurs.
5. Cytokinesis I: The cytoplasm divides and the production of two diploid daughter cells takes place.

Meiosis II:

Meiosis II has five stages: Prophase II, Metaphase II, Anaphase II, Telophase II, and Cytokinesis II.

1. Prophase II: The nuclear envelope disintegrates and the reformation of spindle fibers occurs.
2. Metaphase II: The chromosomes get aligned along with the equatorial plate.
3. Anaphase II: The sister chromatids get pulled to opposite poles.
4. Telophase II: Spindle fibers get disappeared and the reformation of the nuclear envelope occurs.
5. Cytokinesis II: The cytoplasm divides and the production of four haploid daughter cells takes place.

Thus, condensation of chromosomes and the disintegration of the nuclear envelope occurs first during meiosis.