[pol-ee-jen-uh-sis] /ˌpɒl iˈdʒɛn ə sɪs/

noun, Biology, Anthropology.
origin from more than one ancestral species or line.
(biology) evolution of a polyphyletic organism or group
the hypothetical descent of the different races of man from different ultimate ancestors

“plurality of origins,” 1858, from poly- + genesis. Related: Polygenetic (1851).


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  • Polygenetic

    [pol-ee-juh-net-ik] /ˌpɒl i dʒəˈnɛt ɪk/ adjective 1. Biology. relating to or exhibiting polygenesis. 2. having many or several different sources of origin.

  • Polygenic

    [pol-ee-jeen] /ˈpɒl iˌdʒin/ noun 1. one of a group of nonallelic genes that together control a quantitative characteristic in an organism. /ˌpɒliˈdʒɛnik/ adjective 1. of, relating to, or controlled by polygenes: polygenic inheritance /ˈpɒlɪˌdʒiːn/ noun 1. any of a group of genes that each produce a small quantitative effect on a particular characteristic of the […]

  • Polygenism

    [puh-lij-uh-niz-uh m] /pəˈlɪdʒ əˌnɪz əm/ noun 1. the theory that the human race has descended from two or more ancestral types.

  • Polygenic-inheritance

    noun, Genetics. 1. the heredity of complex characters that are determined by a large number of genes, each one usually having a relatively small effect.

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