性 (生物學)







動物精子、卵子成功結合的一瞬間。


性是生物學上一種過程，用來混合交換基因特徵。大部分生物都會分成兩性，即雌性與雄性。有性生殖（Sexual production）靠專門用來生殖的生殖細胞結合，形成子息，遺傳了其父母的特徵。生殖細胞的形狀可以一模一樣，但多數都不同形，尤其是分成兩種。雄生殖細胞，通常較細小且活動範圍大，可以帶基因訊息到遠處，而雌生殖細胞，通常體積較大，活動範圍小，但富有營養，用來孕育新生命。










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