At the end of meiosis

Options

A. Four haploid cells are formed
B. Four diploid cells are formed
C. Two-haploid cells are formed
D. Two-diploid cells are formed

Answer

### Step-by-Step Solution:

1. **Understanding Meiosis**: Meiosis is a type of cell division that reduces the chromosome number by half, resulting in the formation of gametes (sperm and eggs in animals). It consists of two successive divisions: meiosis I and meiosis II.

2. **Chromosome Reduction**: At the start of meiosis, a diploid cell (which has two sets of chromosomes) undergoes division. During meiosis I, homologous chromosomes are separated, leading to a reduction in chromosome number.

3. **Formation of Haploid Cells**: After meiosis I, the resulting cells are haploid, meaning they contain only one set of chromosomes. Meiosis II then occurs, where the sister chromatids of each chromosome are separated.

4. **Final Outcome**: At the end of meiosis II, four haploid cells are produced from the original diploid cell. This is the key result of meiosis.

5. **Evaluating the Options**:
- Option 1: 4 haploid cells are formed (Correct)
- Option 2: 4 diploid cells are formed (Incorrect)
- Option 3: 2 haploid cells are formed (Incorrect)
- Option 4: 2 diploid cells are formed (Incorrect)

6. **Conclusion**: The correct answer is that at the end of meiosis, 4 haploid cells are formed.