Meiosis II - Karyokinesis II

Description:

Interkinesis is followed by the stage called karyokinesis II. It involves the separation of two chromatids of each chromosome and the movement of the chromatids into separate cells.

Karyokinesis II is divided into four phases: Prophase II, Metaphase II, Anaphase II and Telophase II.

The changes a cell undergoes during the following stages are −

Prophase II

• Formation of asters form the centrioles of centrosome.
• Disappearance of nuclear membrane and nucleolus.
• Condensation of chromatin fibres into definite number of chromosomes.

Metaphase II

• Arrangement of chromosomes in the equatorial plate.
• Each centromere is joined by two chromosomal fibre.

Anaphase II

• Splitting of centromere of each chromosome.
• Formation of two daughter chromosomes.
• Movement of the daughter chromosomes towards the pole.

Telophase II

• Formation of daughter nucleus at each pole.
• Appearance of nuclear membrane.
• Disappearance of astral rays and spindle fibres.