Meiosis Worksheet: Drag and drop to name the stages of cell division.

Problem Overview:

The task is to identify and label the stages of meiosis in the provided images. Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four haploid cells from one diploid cell. The process is divided into two phases: Meiosis I and Meiosis II, each with its own set of stages.

Stages of Meiosis:

1. Prophase I: Chromosomes condense, homologous chromosomes pair up (synapsis), crossing-over occurs, and the nuclear envelope breaks down.
2. Metaphase I: Homologous chromosome pairs align at the metaphase plate (equator) of the cell.
3. Anaphase I: Homologous chromosomes separate and move to opposite poles of the cell.
4. Telophase I: Chromosomes reach the poles, and the nuclear envelope may reform. The cytoplasm divides, resulting in two haploid cells.
5. Prophase II: In the newly formed haploid cells, chromosomes condense again, and a new spindle forms.
6. Metaphase II: Sister chromatids align at the metaphase plate.
7. Anaphase II: Sister chromatids separate and move to opposite poles.
8. Telophase II: Chromatids reach the poles, and the nuclear envelope reforms. The cytoplasm divides, resulting in four haploid cells.

Solution:

We will match the descriptions and images to the correct stages of meiosis.

#### Top Row:
1. Image 1: "The chromosomes condense, and the nuclear envelope breaks down. Crossing-over occurs."
- Stage: Prophase I

2. Image 2: "Pairs of homologous chromosomes move to the equator of the cell."
- Stage: Metaphase I

3. Image 3: "Homologous chromosomes move to the opposite poles of the cell."
- Stage: Anaphase I

4. Image 4: "Chromosomes gather at the poles of the cells. The cytoplasm divides."
- Stage: Telophase I

#### Middle Row:
5. Image 5: "A new spindle forms around the chromosomes."
- Stage: Prophase II

6. Image 6: "Metaphase II chromosomes line up at the equator."
- Stage: Metaphase II

7. Image 7: "Centromeres divide. Chromatids move to the opposite poles of the cells."
- Stage: Anaphase II

8. Image 8: "A nuclear envelope forms around each set of chromosomes. The cytoplasm divides."
- Stage: Telophase II

#### Bottom Row:
The labels are already provided as options for dragging and dropping.

Final Answer:

- Top Row: Prophase I, Metaphase I, Anaphase I, Telophase I
- Middle Row: Prophase II, Metaphase II, Anaphase II, Telophase II

\boxed{
\text{Top Row: Prophase I, Metaphase I, Anaphase I, Telophase I} \\
\text{Middle Row: Prophase II, Metaphase II, Anaphase II, Telophase II}
}