Different Phases of Meiosis II and its Significance MCQ - Practice Questions with Answers

Stages of Meiosis ⅠⅠ and Significance of Meiosis

• The cells that enter meiosis II contain the haploid number of chromosomes.
• But these chromosomes still have duplicated sister chromatids.
• Therefore, the chromatids are reduced to one per chromosome during meiosis II

Prophase II

• If the chromosomes decondense in telophase I, they condense again. 
• If nuclear envelopes were formed, they fragment into vesicles. 
• The centrosomes that were duplicated during interkinesis move away from each other toward opposite poles, and new spindles are formed.

Metaphase II

• The sister chromatids are maximally condensed and aligned at the equator of the cell.

Anaphase II

• The sister chromatids are pulled apart and move toward opposite poles. 
• Note that the chromatids of the chromosomes separate in this phase.

Telophase II and Cytokinesis

• The chromosomes arrive at opposite poles and begin to decondense.
• Nuclear envelopes form around the chromosomes.
• Cytokinesis separates the two cells into four unique haploid cells.

Significance of Meiosis:

• The constant chromosome number is maintained across the generations.
• It helps in introducing variations and mutation.
•  It brings about gamete formation.