Draw diagrams to show the sequence of changes occuring in a cell during meiosis-II

Answer

To illustrate the sequence of changes occurring in a cell during Meiosis II, we will break down the process into its key phases: Prophase II, Metaphase II, Anaphase II, Telophase II, and Cytokinesis. Below is a step-by-step text solution along with diagrams for each phase.

### Step 1: Prophase II
- **Description**: In Prophase II, the two daughter cells from Meiosis I prepare for division. The nuclear envelope begins to disintegrate, and spindle fibers start to form.
- **Diagram**: Draw two cells, each containing chromosomes that are not yet aligned. Indicate the formation of spindle fibers and the disintegration of the nuclear envelope.

### Step 2: Metaphase II
- **Description**: During Metaphase II, the chromosomes align along the equatorial plate of the cell. The spindle fibers attach to the centromeres of the chromosomes.
- **Diagram**: Illustrate the two cells with chromosomes lined up at the equator. Show spindle fibers extending from the poles of the cells to the centromeres of the chromosomes.

### Step 3: Anaphase II
- **Description**: In Anaphase II, the centromeres divide, and the sister chromatids are pulled apart toward opposite poles of the cells.
- **Diagram**: Draw the two cells with sister chromatids moving away from each other toward opposite poles. Indicate that they are now individual chromosomes.

### Step 4: Telophase II
- **Description**: During Telophase II, the chromosomes reach the poles, and the nuclear envelope begins to reform around each set of chromosomes. The chromosomes start to de-condense.
- **Diagram**: Illustrate the two cells with chromosomes at the poles and the nuclear envelope reforming around each set of chromosomes.

### Step 5: Cytokinesis
- **Description**: Cytokinesis occurs, resulting in the division of the cytoplasm and the formation of four haploid daughter cells.
- **Diagram**: Show the final two cells dividing into four distinct cells, each with half the chromosome number of the original parent cell.

### Final Diagram
- Combine all the diagrams to show the sequential changes from Prophase II to Cytokinesis, labeling each phase accordingly.