Phases Of Meiosis Cell Division

It is the special type of cell division that yields haploid daughter cell from a diploid parent cell. It occurred only in sex cells. There are two phases of meiosis cell division.

                              Meiosis -1


Interphase - preparation for cell division.

Prophase - 1

• Leptotene - Chromosome begin to shorten and thicken
• Zygotene -  Homologous chromosome begin to pair
• Pachytene -pairing complete
• Diplotene - Appearance of chromatids and chiasmata
• Diakinesis- Separation of centromere. Nuclear membrane nucleolus disappear.  

Metaphase-1 : Chromosome pair with spindle attachment

Anaphase -1 : Paired chromosome separate and move towards pole.

Telophase-1 : Appearance of new nucleus. Chromosome reduced to haploid in each nucleus.

                                 Meiosis -2


Prophase-2

• Coiling and thickening of chromosome
• Formation of spindle,chromosome aster by two chromatid.
• Gradual disappear of nucleus.

Metaphase-2

Positioning of chromosome to the middle of spindle.

Anaphase -2

Chromosome separate and move to poles.

Telophase -2

Formations of nuclear envelop nucleoli.

Disappear of spindle. 

Chromosomes come back into non divisional state and form two cells.

At last four (two + two) daughter cells are produced.