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			== Richard Goldschmidt ==
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			File:Richard_Goldschmidt.jpg\|Richard Goldschmidt
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'''Richard Benedict Goldschmidt''' (April 12, 1878 – April 24, 1958) was a German-American geneticist. He is considered one of the most controversial figures in biology for his theories on evolution, particularly his belief in the "hopeful monster" hypothesis, which posits that new species can arise suddenly through large mutations. Despite the controversy, Goldschmidt made significant contributions to genetics, embryology, and evolutionary biology.

==Early Life and Education==
Richard Goldschmidt was born in Frankfurt am Main, Germany. He pursued his education at the University of Heidelberg where he initially studied natural sciences. Later, he shifted his focus to zoology, earning his Ph.D. in 1903. His doctoral thesis was on the development of the [[nervous system]] in moth larvae.

==Career==
Goldschmidt's early career was marked by his work on the genetics of [[gypsy moths]], which laid the foundation for his lifelong interest in genetics and evolution. In 1913, he became the director of the newly established Department of Genetics at the Kaiser Wilhelm Institute for Biology in Berlin-Dahlem, a position he held until 1935.

During his tenure at the Kaiser Wilhelm Institute, Goldschmidt's work expanded to include studies on [[sex determination]], [[heredity]], and [[evolution]]. His research on the [[plumage color]] of chickens and the [[eye color]] of fruit flies contributed to the understanding of genetic mutation and inheritance.

==Theoretical Contributions==
Goldschmidt is best known for his "hopeful monster" hypothesis, which he detailed in his book "The Material Basis of Evolution" (1940). He argued that macro mutations could produce fully formed new species instantaneously, a concept that was in stark contrast to the gradualism advocated by most evolutionary biologists of his time, including the proponents of the [[Modern Synthesis]].

Despite the initial rejection of his ideas, some aspects of Goldschmidt's work have been revisited with the advent of [[evo-devo]] (evolutionary developmental biology), which explores how developmental processes contribute to evolutionary changes.

==Later Life and Legacy==
Goldschmidt faced increasing hostility in Nazi Germany due to his Jewish heritage and opposition to Nazi ideologies. In 1936, he emigrated to the United States, where he accepted a position at the University of California, Berkeley. He continued his research and teaching until his retirement in 1948.

Richard Goldschmidt passed away in 1958. Although his "hopeful monster" hypothesis remains controversial, his contributions to genetics and the broader field of biology are recognized for their pioneering nature. His work is seen as a precursor to modern concepts in genetics and evolutionary theory.

==Selected Publications==
* ''The Material Basis of Evolution'' (1940)
* ''Physiological Genetics'' (1938)
* ''Theoretical Genetics'' (1955)

==See Also==
* [[Evolutionary biology]]
* [[Genetics]]
* [[Macroevolution]]
* [[Modern Synthesis]]
* [[Evo-devo]]

[[Category:Geneticists]]
[[Category:Evolutionary biologists]]
[[Category:German biologists]]
[[Category:American biologists]]
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Richard Goldschmidt - Revision history

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