Spontaneous generation
Spontaneous Generation
Spontaneous generation (/spɒntəˈniːəs dʒɛnəˈreɪʃən/) is a historical scientific theory that life can arise from non-living matter, such as dust or old rags. The concept has been largely discredited by modern science, but it played a significant role in the history of biology and the development of the cell theory.
Etymology
The term "spontaneous generation" comes from the Latin spontaneus meaning "of one's own accord" and the Greek genesis meaning "origin". It was first used in this context by English naturalist John Needham in the 18th century.
History
The concept of spontaneous generation dates back to the ancient Greeks, including philosophers like Aristotle who believed that certain forms of life could emerge spontaneously from inanimate matter. This belief was widely accepted until the 19th century when experiments by scientists like Louis Pasteur and Francesco Redi provided evidence against spontaneous generation and in favor of biogenesis, the theory that life comes only from pre-existing life.
Related Terms
- Abiogenesis: The natural process by which life has arisen from non-living matter, such as simple organic compounds.
- Biogenesis: The production of new living organisms or organelles.
- Vitalism: The belief in a life force outside the jurisdiction of physical and chemical laws.
- Preformationism: The theory that all organisms were created at the same time, and that succeeding generations grow from homunculi, or animalcules, that have existed since the beginning of creation.
See Also
External links
- Medical encyclopedia article on Spontaneous generation
- Wikipedia's article - Spontaneous generation
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