It's not quite accurate to say there are "examples" of meiosis. Meiosis is a specific process, not an event. However, we can talk about 5 situations where meiosis is essential:

1. Formation of gametes (sperm and egg cells) in humans and other sexually reproducing organisms: Meiosis halves the number of chromosomes in these cells, ensuring that when they fuse during fertilization, the offspring inherits the correct number of chromosomes.

2. Reproduction in plants: Meiosis is used to produce spores, which can develop into new plants, like in ferns and mosses.

3. Sexual reproduction in fungi: Meiosis is involved in the production of haploid spores in fungi, allowing for genetic diversity.

4. Production of pollen grains in flowering plants: Meiosis creates haploid pollen grains, which carry the male genetic material for fertilization.

5. Formation of gametes in animals: Meiosis is responsible for creating eggs in females and sperm in males, allowing for genetic diversity in offspring.

Remember, meiosis is the process by which these situations occur, not an event in itself.