1768 ⟶ Lazzaro Spallanzani Disproves Spontaneous Generation and Studies Reproduction
Lazzaro Spallanzani again disproved spontaneous generation b...
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1768
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🪰 Francesco Redi disproves spontaneous generation using fly maggots
Francesco Redi disproved spontaneous generation by showing that fly maggots only appear on pieces of meat in jars if the jars are open to the air. Jars covered with cheesecloth contained no flies.⟶
Spontaneous GenerationFrancesco RediBiologyGerm Theory17th CenturyExperimentationItalyBiogenesisMicrobiology
Italy🔬 Lazzaro Spallanzani Disproves Spontaneous Generation and Studies Reproduction
Lazzaro Spallanzani again disproved spontaneous generation by showing that no organisms grow in a rich broth if it is first heated (to kill any organisms) and allowed to cool in a stoppered flask. He also showed that fertilization in mammals requires an egg and semen.⟶
BiologySpontaneous GenerationLazzaro SpallanzaniGerm TheoryReproduction18th CenturyFertilization
Italy🥚 Sperm Discovered to be Agents of Fertilization
J. L. Prevost and J. B. Dumas showed that the sperm in semen were not parasites, as previously thought, but, instead, the agents of fertilization.⟶
BiologyReproductionFertilizationSpermJ. L. PrevostJ. B. Dumas19th Century BiologyEmbryologySexuality
France🥚 Fusion of Sperm and Egg Observed in Rabbits
Martin Barry reported the fusion of a sperm and an egg for rabbits in a 1-page paper in the Philosophical Transactions of the Royal Society of London.⟶
BiologyReproductionFertilizationMartin BarryEmbryology19th CenturyCell Biology
United Kingdom🧫 Pasteur Disproves Spontaneous Generation
Louis Pasteur disproved the spontaneous generation of cellular life.⟶
Spontaneous GenerationBiologyLouis PasteurMicrobiology19th Century ScienceGerm TheoryBiogenesisCell Theory
France