1 Diploid Cell, chromosomes in pairs 4 Haploid Cells, chromosome pairs split In higher plants and animals, meiosis occurs to produce the gametophyte generation or the gametes themselves gametes.
Gametes fuse to produce the diploid generation, which grows into the adults.
In lower plants, the haploid generation produced by meiosis is the dominant form. For example, mosses are primarily composed of haploid cells. Meiosis occurs in two steps. During meiosis I, the chromosome pairs are divided between the two cells produced. During meiosis II, the two sister chromatids are segregated into each daughter cell.