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Francesco Redi. In 1668, Francesco Redi published the first set of experiments challenging spontaneous generation. In these experiments, he demonstrated that maggots arise from the eggs of flies rather than directly from rotting meat. He did so by taking several jars and placing raw meat inside of them.
Evidences against the Theory of Spontaneous Generation: The theory of spontaÂ­neous generation was disproved by many scientists of 17th, 18th and 19th centuries. They proved that new organisms can be formed from pre-existing ones, i.e., omnis vivum ex ovo or vivo (âBiogenesisâ of Harveyâ1651 and Ñ. H. Huxleyâ1870).