Meiosis reduces chromosome number from diploid to haploid in eukaryotic cells. Most animals and plants are diploid, containing two sets of chromosomes. Homologous chromosomes pair in pairs during prophase I
Haploid cells contain one complete set of chromosomes (n). Diploid cells have two complete sets of chromosomes (2n). Haploid cells are found in reproductive cells (gametes). Diploid cells are found in non-reproductive somatic cells