Meiosis is a type of cell division necessary for sexual reproduction. In animals, meiosis produces gametes (sperm and egg cells). Meiosis begins with one diploid cell containing two copies of each chromosome, one from the mother and one from the father, and produces four haploid cells containing one copy of each chromosome. Each of the resulting chromosomes in the gamete, haploid cells is a unique mixture of maternal and paternal DNA, ensuring genetic diversity and variation. Below is a short video that illustrates all the steps to meiosis.