(A) Hugo de Vries, a Dutch botanist, proposed the mutation theory of evolution. He conducted his experiments on the evening primrose, scientifically k

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(A) Hugo de Vries, a Dutch botanist, proposed the mutation theory of evolution. He conducted his experiments on the evening primrose, scientifically known as $Oenothera$ $lamarckiana$. He observed sudden, heritable changes in the population and termed these as mutations.