LAMARCKISM
\lˈamɑːkˌɪzəm], \lˈamɑːkˌɪzəm], \l_ˈa_m_ɑː_k_ˌɪ_z_ə_m]\
Definitions of LAMARCKISM
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The evolution theory of Lamarck, embodying the principle that acquired characteristics are transmissible.
By Henderson, I. F.; Henderson, W. D.
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The theory, in evolution, that the growth of and changes in organs were due to the supervention of a new requirement (e. g., that the neck of the giraffe was originally short and became lengthened on account of the efforts of the animal to reach food high above its head), as opposed to the theory of natural selection.
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As sometimes used, the theory that all animal and vegetable life is descended from a common stock.
By Smith Ely Jelliffe
