العربية
中国
Français
Deutsch
Ελληνική
हिन्दी
Italiano
日本語
Português
Русский
EspañolBERNARD KETTLEWELL
'Henry Bernard Davis Kettlewell' (24 February 1907 - 1979) was a British geneticist, lepidopterist and medical doctor, who carried out important research into the influence of industrial melanism on natural selection in moths, showing why moths are darker in polluted areas.
Kettlewell was born in Howden, Yorkshire, was educated at Charterhouse School, and studied medicine at Cambridge and at St Bartholomew's Hospital, London.
He was based at Cape Town University, South Africa, from 1949 to 1952, investigating methods of locust control and going on expeditions. Returning to England, he spent the rest of his career at Oxford as a genetics researcher, supervised by E.B. Ford.
Kettlewell is notable for his experiments on the peppered moth ''Biston betularia'' carried out in Birmingham and Deanend Wood, Dorset, England.[1] He demonstrated experimentally the efficiency of natural selection as an evolutionary force: light-coloured moths are more conspicuous than dark-coloured ones in industrial areas, where the vegetation is darkened by pollution, and are therefore easier prey for birds, but are less conspicuous in unpolluted rural areas, where the vegetation is lighter in colour, and therefore survive predation better. His experiment led to better understanding of industrial melanism and its effects on the evolution of species.
Kettlewell died from a drug overdose in 1979. Though recorded as accidental, it has been suggested that it was a suicide.[2]
1.
2. http://www.weloennig.de/BistonA.html
★ Hooper, Judith 2002. ''Of moths and men''. Norton. Claims K's work was fraudulent and/or incompetent.
Kettlewell was born in Howden, Yorkshire, was educated at Charterhouse School, and studied medicine at Cambridge and at St Bartholomew's Hospital, London.
He was based at Cape Town University, South Africa, from 1949 to 1952, investigating methods of locust control and going on expeditions. Returning to England, he spent the rest of his career at Oxford as a genetics researcher, supervised by E.B. Ford.
Kettlewell is notable for his experiments on the peppered moth ''Biston betularia'' carried out in Birmingham and Deanend Wood, Dorset, England.[1] He demonstrated experimentally the efficiency of natural selection as an evolutionary force: light-coloured moths are more conspicuous than dark-coloured ones in industrial areas, where the vegetation is darkened by pollution, and are therefore easier prey for birds, but are less conspicuous in unpolluted rural areas, where the vegetation is lighter in colour, and therefore survive predation better. His experiment led to better understanding of industrial melanism and its effects on the evolution of species.
Kettlewell died from a drug overdose in 1979. Though recorded as accidental, it has been suggested that it was a suicide.[2]
| Contents |
| References |
References
1.
2. http://www.weloennig.de/BistonA.html
★ Hooper, Judith 2002. ''Of moths and men''. Norton. Claims K's work was fraudulent and/or incompetent.
This article provided by Wikipedia. To edit the contents of this article, click here for original source.
psst.. try this: add to faves
