Meiosis II

Definition

Meiosis II is the second division in meiosis that separates sister chromatids into four distinct haploid cells. It follows Meiosis I and is similar to mitosis but occurs without replicating the DNA again.

5 Must Know Facts For Your Next Test

1. Meiosis II includes four stages: prophase II, metaphase II, anaphase II, and telophase II.
2. During prophase II, chromosomes condense and the nuclear envelope breaks down if reformed after Meiosis I.
3. In metaphase II, chromosomes align at the cell's equatorial plate.
4. Anaphase II involves the separation of sister chromatids to opposite poles of the cell.
5. Telophase II and cytokinesis result in four genetically distinct haploid cells.

Review Questions

• What key event differentiates Meiosis I from Meiosis II?
• During which stage of Meiosis II do sister chromatids separate?
• How many haploid cells are produced at the end of Meiosis II?

Related terms

Meiosis I: The first division in meiosis that separates homologous chromosomes into two daughter cells.

Mitosis: A type of cell division resulting in two genetically identical daughter cells with the same number of chromosomes as the parent.

Haploid: A cell containing a single set of unpaired chromosomes, typically represented as n.