減數分裂
減數分裂（拉丁文：meiosis）係一種好特別嘅細胞分裂，會搞到染色體嘅數目減一半，變做單倍體細胞，每條染色體都係嚟自於佢嘅親本細胞（parent cell） 。呢個過程會發生喺所有用有性生殖嚟繁殖嘅細胞生物體入面，包括動物、植物、同埋真菌 。同有絲分裂唔同嘅係，減數分裂會做兩次分裂，分做四粒子細胞，而且子細胞同親本細胞嘅基因大多數都唔一樣，因為喺分裂嗰陣會互換（crossing over）。減數分裂同有絲分裂一樣有前期、前中期、中期、後期同埋末期嘅階段，但係由於會分裂兩次，所以夾埋有十個階段。
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