Dictionary

overdominance

noun over·dom·i·nance \ˌō-vər-ˈdä-mə-nən(t)s, -ˈdäm-nən(t)s\

Definition of OVERDOMINANCE

:  the condition wherein a heterozygote produces a phenotype more extreme or better adapted than that of the homozygote
over·dom·i·nant \-nənt\ adjective

First Known Use of OVERDOMINANCE

1947

overdominance

noun over·dom·i·nance \-ˈdäm(-ə)-nən(t)s\   (Medical Dictionary)

Medical Definition of OVERDOMINANCE

:  the property of having a heterozygote that produces a phenotype more extreme or better adapted than that of the homozygote
over·dom·i·nant \-nənt\ adjective

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