This type of reproduction produces variety in species.

Sexual reproduction

Asexual reproduction

Mitosis

Cloning

Sexual Reproductions (i. e. Meiosis)

In Meiosis you have a crossing over stage in prophase I, which will result in the exchange of genetic material + the random assortment at metaphase 1 and 2 increases the variety.

There is approximately 10 billion different ways that a child can look from a mixture of the paternal and maternal genes due to all the random events that happen in meiosis / sexual reproduction.