There is no Interphase preceding second meiotic division.
There is a brief intervening period called Interkinesis
During this period there may be synthesis of some reserve food and proteins. However, there is no replication of DNA prior to meiosis II.
Karyokinesis-ΙΙ
Karyokinesis of meiosis-II (Karyokinesis-II) can be distinguished into four stages namely
• prophase-II,
• metaphase-II,
• anaphase-II and
• Telophase-II.
Prophase-II:
- It is of a short duration compared to prophase-I. No significant changes take place in the chromosomes.
- Nuclear membrane and nucleolus disappear.
- Asters and spindle fibers are formed.
Metaphase-II:
- The chromosomes line up at the equator of the cell forming a single metaphase plate (as in mitosis).
Anaphase-II:
- The centromere splits and two chromatids in each chromosome start moving away from each other. Finally, they reach the poles of the cell.
- Each pole now has haploid number of chromosomes and half the amount of DNA.
- Telophase-II:
- Chromosomes at each pole uncoil and elongate to form chromatin.
- Nucleolus and nuclear membrane are formed surrounding each chromatin network.
- Asters and spindle fibers disappear and centrioles divide. Daughter nuclei are formed.