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'''Sexual reproduction''' is reproduction by [[meiosis]] and fusion of the [[gametes]] from a single parent [[organism]] (selfing) or two parent organisms.  The parent organisms are usually a [[male]] and a [[female]].<ref>Freeman, Scott, ''Biological Science''. Prentice Hall 2005.</ref> In sexual reproduction the gametes produced by the male and female each contain half of the parent's two sets of [[gene]]s, and fusion of the gametes creates a new [[cell]] which has two sets of genes, one set from each parent.  This combination of genes leads to much genetic variation between parents and offspring. Many [[species]] reproduce sexually, such as [[human]]s, while some species (including many plants and some animals) can reproduce either sexually or [[asexual reproduction|asexually]].

'''Sexual reproduction''' is reproduction by [[meiosis]] and fusion of the [[gametes]] from a single parent [[organism]] (selfing) or two parent organisms.  The parent organisms are usually a [[male]] and a [[female]].<ref>Freeman, Scott, ''Biological Science''. Prentice Hall 2005.</ref> In sexual reproduction the gametes produced by the male and female each contain half of the parent's two sets of [[gene]]s, and fusion of the gametes creates a new [[cell]] which has two sets of genes, one set from each parent.  This combination of genes leads to much genetic variation between parents and offspring. Many [[species]] reproduce sexually, such as [[human]]s, while some species (including many plants and some animals) can reproduce either sexually or [[asexual reproduction|asexually]].