SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Lev Semyonovich Berg (1876-1950), Russian geographer and biologist and founder of the nomogenesis theory of evolution. Berg collected large volumes of samples and data, mainly of fish, to challenge Darwin's theories. In its place, he suggested that evolution proceeded by a series of mass mutations that were directed by internal and external forces.
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