Editing Cell growth (section)

===Sexual reproduction===
{{main|Evolution of sex}}
{{further|Origin and function of meiosis|Homologous recombination}}
Though cell reproduction that uses mitosis can reproduce eukaryotic cells, eukaryotes bother with the more complicated process of meiosis because [[sexual reproduction]] such as meiosis confers a [[Natural selection|selective advantage]]. Notice that when meiosis starts, the two copies of sister chromatids number 2 are adjacent to each other. During this time, there can be [[genetic recombination]] events. Information from the chromosome 2 DNA gained from one parent (red) will transfer over to the chromosome 2 DNA molecule that was received from the other parent (green). Notice that in mitosis the two copies of chromosome number 2 do not interact. [[Homologous recombination|Recombination of genetic information between homologous chromosomes]] during [[meiosis]] is a process for [[DNA repair|repairing DNA damages]]. This process can also produce new combinations of genes, some of which may be adaptively beneficial and influence the course of evolution. However, in organisms with more than one set of chromosomes at the main life cycle stage, sex may also provide an advantage because, under random mating, it produces [[homozygote]]s and [[heterozygote]]s according to the [[Hardy–Weinberg ratio]].