Darwin's pangenesis theory was criticised for its pass on traits acquired in their lifetime.
2.
Spencer in his book " Principles of Biology " ( 1864 ), proposed a pangenesis theory that involved " physiological units ".
3.
De Vries called these units " pangenes " ( " Pangens " in German ), after Darwin's 1868 pangenesis theory.
4.
The pangenesis theory, similar to Hippocrates's views on the topic, imply that the whole of parental organisms participate in heredity ( thus the prefix " pan " ) while adapting to cell theory.
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