Talitha Ford edited Talitha's attempt.md  about 9 years ago

Commit id: f647d11d9269dffd3a0996912d58688e831a8457

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1. organic beings must be exposed during several generations to the new conditions of life to cause any appreciable amount of variation;  2. that when the organisation has once begun to vary, it generally continues to vary for many generations.  No case is on record of a variable being **ceasing to be variable under cultivation. Our oldest cultivated plants**, such as wheat, still often yield new varieties: _our oldest domesticated animals are still capable of rapid improvement or modification_.