Define meiosis. Give the occurrence of meiosis.

Explanation

### Step-by-Step Solution:

**Step 1: Define Meiosis**
Meiosis is a type of cell division that reduces the chromosome number by half, resulting in the formation of four haploid cells from one diploid parent cell. It consists of two sequential divisions, known as meiosis I and meiosis II.

**Step 2: Explain the Process of Meiosis**
- **Meiosis I**: This is the reductional division where homologous chromosomes are separated. Each daughter cell receives one chromosome from each homologous pair, resulting in two haploid cells.
- **Meiosis II**: This division resembles mitosis, where the sister chromatids of each chromosome are separated. The result is four haploid cells, each with a single set of chromosomes.
...