introgression


in·tro·gres·sion

noun \ˌin-trə-ˈgre-shən\

Definition of INTROGRESSION

:  the entry or introduction of a gene from one gene complex into another (as by hybridization)
in·tro·gres·sant \-ˈgre-sənt\ adjective or noun
in·tro·gres·sive \-ˈgre-siv\ adjective

Origin of INTROGRESSION

intro- + -gression (as in regression)
First Known Use: 1938

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