Herbert Spencer Jennings (born in Tonica, Illinois, April 8, 1868; died in Santa Monica, California, April 14, 1947) was a zoologist, geneticist, and eugenicist. His research helped demonstrate the link between physical and chemical stimulation and automatic responses in lower orders of animals. Tracy Sonneborn would later write:
Jennings was so struck by the continued production of hereditarily diverse clones at conjugation, even after many successive inbreedings, that he undertook to examine the matter mathematically. As a result, general formulae for the results of diverse systems of mating were published in a series of papers between 1912 and 1917; these were one of the main seeds from which the whole field of mathematical genetics developed.
- Marler, Peter (2005), "Ethology and the origins of behavioral endocrinology.", Hormones and behavior (2005 Apr) 47 (4): 493–502, doi:10.1016/j.yhbeh.2005.01.002, PMID 15777816
- Schloegel, Judy Johns; Schmidgen, Henning (2002), "General physiology, experimental psychology, and evolutionism. Unicellular organisms as objects of psychophysiological research, 1877-1918.", Isis; an international review devoted to the history of science and its cultural influences (2002 Dec) 93 (4): 614–45, PMID 12664793
- Barkan, E (1991), "Reevaluating progressive eugenics: Herbert Spencer Jennings and the 1924 immigration legislation.", Journal of the history of biology 24 (1): 91–112, doi:10.1007/BF00130475, PMID 11612743
- Sonneborn, T M (1974), "Herbert Spencer Jennings.", Biographical memoirs. National Academy of Sciences (U.S.) 47: 143–223, PMID 11615625
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