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[vahys-mahn-iz-uh m] /ˈvaɪs mɑnˌɪz əm/
noun, Biology.
the theories of heredity as expounded by Weismann, especially the theory that all inheritable characteristics are carried in the germ plasm, and that acquired characteristics cannot be inherited.
Origin of Weismannism
First recorded in 1890-95; Weismann + -ism
Related forms
Weismannian, adjective, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for Weismannism


the doctrine of the continuity of the germ plasm. This theory of heredity states that all inheritable characteristics are transmitted by the reproductive cells and that characteristics acquired during the lifetime of the organism are not inherited
Word Origin
C19: named after August Weismann (1834–1914), German biologist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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