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(C) Hugo de Vries $(1848-1935)$ conducted his experiments on the evening primrose, $Oenothera 	ext{ } lamarckiana$.Based on his observations of sudde

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Oenothera lamarckiana

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(C) Hugo de Vries $(1848-1935)$ conducted his experiments on the evening primrose, $Oenothera 	ext{ } lamarckiana$.Based on his observations of sudden, heritable changes in this plant, he proposed the 'Mutation Theory of Evolution' in $1901$.This theory suggests that evolution is a discontinuous process caused by large, sudden mutations rather than small, continuous variations.

Mutation theory explaining organic evolution was proposed by Hugo de Vries. He worked on

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