In mitosis, a diploid parent cell gives rise to two new daughter cells that contain the exact same number of chromosomes as the parent cell, but are approximately half the size of the original cell. Mitosis is the way an organism grows, repairs worn out cells and can even be the process by which organisms reproduce asexually, when carrying out binary fission or budding, for example. Meiosis is a reduction division. In this process, a diploid ovary or teste cell gives rise to four haploid cells. In males, the gametes are known as sperm cells. In females, meiosis results in the production of one ova or egg cell, the female gamete and three polar bodies. Because meiosis reduces the chromosome number of the species by half, when two haploid cells combine, a diploid zygote is the result, thus preserving the chromosome number of the species.