Equational Division

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Equational Division can also be known as Meiosis II. The title Equational Division comes from the fact that the chromosome number in the cell is the same before the second stage of division in meiosis as it is after the division has occurred.

Like Meiosis I, Equational Division has 4 stages, Prophase II, Metaphase II, Anaphase II and Telophase II. During prophase II the division spindles are formed and during Metaphase II the chromosomes will line up on the spindles aligning their centromeres. In anaphase II the sister chromatids break apart and move to opposite poles of the spindle. Finally in Telophase II there is the division of the cytoplasm to create four haploid nuclei.

In all, the equational division appears to be the same as the first meiotic division, however the chromatids contain different genetic information due to crossing over in the first stage of the division cycle [1].

References

  1. Hartl, D.L. and Ruvulo, M. (2011). Genetics: Analysis of genes and genomes. 8th ed. London: Jones & Bartlett learning. 131.

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