Oenothera lamarckiana
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Oenothera lamarckiana, commonly known as the evening primrose, is a plant species that became significant in the study of genetics. Dutch botanist Hugo de Vries observed that this plant, particularly O. lamarckiana, occasionally produced offspring with traits that differed markedly from the parent generation. This led de Vries to develop his mutation theory, which proposed that new species could arise through sudden, significant changes (mutations) rather than gradual evolution. His experiments with the evening primrose suggested that evolution could be studied experimentally, challenging existing ideas about variation and the formation of species.123
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- Hugo de Vries
…of the evening primrose (Oenothera lamarckiana) that differed markedly from the cultivated species. This suggested to de Vries that evolution might be studied by a new, experimental method rather than by the old method of observation and inference. He discovered in his cultivation of the evening primrose new forms…
Read More…of the evening primrose (Oenothera lamarckiana) that differed markedly from the cultivated species. This suggested to de Vries that evolution might be studied by a new, experimental method rather than by the old method of observation and inference. He discovered in his cultivation of the evening primrose new forms…
Read More - mutation theory
…of common evening primrose (Oenothera lamarckiana), which occasionally spawns offspring that differ significantly in leaf traits and overall size from parent generations and that sometimes cannot be crossed with parent generations, de Vries argued that new species came into existence fully formed and viable but lacking the defining characteristics…
Read More…of common evening primrose (Oenothera lamarckiana), which occasionally spawns offspring that differ significantly in leaf traits and overall size from parent generations and that sometimes cannot be crossed with parent generations, de Vries argued that new species came into existence fully formed and viable but lacking the defining characteristics…
Read More