Sex

Butterflies are among those animals that reproduce with sex.
Spider plants with small stolons. They are a way of asexual reproduction.

Sex is a type of reproduction common among living things. Sex is used by plants and animals, and also by fungi and various single-celled organisms. It usually needs two individuals which are different sexes from the same species. It works by combining genes from more than one source.[1]

  1. King R.C. Stansfield W.D. & Mulligan P.K. 2006. A dictionary of genetics, 7th ed. Oxford.

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