Meiosis produces cells with fewer chromosomes because it involves two rounds of cell division. Here's a breakdown:

* Starting Point: A diploid cell, meaning it has two sets of chromosomes (one set from each parent).

* Meiosis I: The first division separates the homologous chromosome pairs, resulting in two cells, each with half the original number of chromosomes. These cells are now haploid.

* Meiosis II: The second division separates the sister chromatids within each chromosome, resulting in four haploid daughter cells.

Why is this important?

* Gamete Production: Meiosis is crucial for sexual reproduction. It produces gametes (sperm and egg cells) with half the number of chromosomes. This ensures that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes (one set from each parent).

* Genetic Diversity: The separation of homologous chromosomes and the independent assortment of chromosomes during meiosis create a vast number of possible gamete combinations. This contributes to the genetic diversity within a species.

In summary, meiosis produces cells with fewer chromosomes by dividing the original cell twice, effectively halving the chromosome number in each round. This is essential for the production of gametes and maintaining the correct chromosome number in offspring.