E. B. Ford

Edmund Brisco "Henry" Ford
Born (1901-04-23)23 April 1901
Dalton-in-Furness, Lancashire
Died 2 January 1988(1988-01-02) (aged 86)
Oxford, Oxfordshire
Nationality British
Fields Ecological genetics
Alma mater Wadham College, Oxford University
Doctoral students P.M. Sheppard, E.R. Creed, J.R.G. Turner
Notable awards Royal Society's Darwin Medal

Edmund Brisco "Henry" Ford FRS[1] Hon. FRCP (23 April 1901 – 2 January 1988) was a British ecological geneticist. He was a leader among those British biologists who investigated the role of natural selection in nature. As a schoolboy Ford became interested in lepidoptera, the group of insects which includes butterflies and moths. He went on to study the genetics of natural populations, and invented the field of ecological genetics. Ford was awarded the Royal Society's Darwin Medal in 1954.

Ford was born in Dalton-in-Furness, near Ulverston, in Lancashire, England, in 1901. He was educated at Wadham College, Oxford University, graduating in zoology in 1924.

Life

Drosophila: Ford did not study this genus, but it was the major research tool of his American colleague Theodosius Dobzhansky

Ford was born in Dalton-in-Furness (near Ulverston in what is now Cumbria), the only child of Harold Dodsworth Ford (1864–1943), a classics teacher turned Anglican clergyman, and his wife (and second cousin) Gertrude Emma Bennett.[2] The family was middle class, and the men tended to be Oxbridge educated; EB Ford's paternal grandfather Henry E Ford was the organist of Carlisle Cathedral.

Ford never married, had no children, and was considered decidedly eccentric, although his eccentricity was said to be more prominent when he knew he had an audience; he was also fond of slightly surrealist practical joking[3] >.

Non-academic information on his life is hard to come by, mostly consisting of scattered remarks made by colleagues. He campaigned strenuously against the admission of female Fellows to All Souls College. Miriam Rothschild, an outstanding zoologist, was one of the few women with whom Ford was on good terms. Rothschild and Ford campaigned for the legalisation of male homosexuality in Britain. Ford was on good terms with Theodosius Dobzhansky, who did ground-breaking work on ecological genetics with Drosophila species: they exchanged letters and visits.

Ford has a Royal Society biographical memoir,[1] but there are few other sources on his life.[4]

Career

Ford's career was based entirely at Oxford University. A.J. Cain said he took a degree in classics before turning to zoology.[5] Ford read zoology at Oxford, and was taught genetics by Julian Huxley. "The lecturer whose interests most closely reflected mine was Julian Huxley. I owe him a great debt, especially for inspiration... Even though Huxley was... only at Oxford from 1919 to 1925, he was the most powerful voice in developing the selectionist attitude there... I met Ray Lankester through E.B. Poulton. He was already an old man... but talked to me a good deal of Charles Darwin and Pasteur, both of whom he knew."[6]

Ford was appointed University Demonstrator in Zoology in 1927 and Lecturer at University College, Oxford, in 1933. Specialising in genetics, he was appointed University Reader in Genetics in 1939 and was the Director of the Genetics Laboratory, 1952–1969, and Professor of Ecological Genetics 1963–1969. Ford was one of the first scientists to be elected a Fellow of All Souls College since the seventeenth century.

Ford had a long working relationship with R.A. Fisher. By the time Ford had developed his formal definition of genetic polymorphism,[7] Fisher had got accustomed to high selection values in nature. He was most impressed by the fact that polymorphism concealed powerful selective forces (Ford gave human blood groups as an example). Like Fisher, he continued the natural selection versus genetic drift debate with Sewall Wright, whom Ford believed put too much emphasis on genetic drift. It was as a result of Ford's work, as well as his own, that Dobzhansky changed the emphasis in the third edition of his famous text from drift to selection.[8]

Callimorpha dominula morpha typica with spread wings. Polymorphism in this species was investigated by Ford for many years.
The red with black rear wings, revealed in flight, warn of its noxious taste. The front wings are cryptic, covering the rear wings at rest. Here the moth, on a human hand, is resting but alert, and has jinked the front wings forward to reveal the warning flash.

Ford was an experimental naturalist who wanted to test evolution in nature. He virtually invented the field of research known as ecological genetics. His work on the wild populations of butterflies and moths was the first to show that the predictions made by R.A. Fisher were correct. He was the first to describe and define genetic polymorphism, and predicted that human blood group polymorphisms might be maintained in the population by providing some protection against disease.[9] Six years after this prediction it was found to be so,[10] and furthermore, heterozygous advantage was decisively established by a study of AB x AB crosses.[11] His magnum opus was Ecological Genetics, which ran to four editions and was widely influential.[12] He laid much of the groundwork for subsequent studies in this field, and was invited as a consultant to help set up similar research groups in several other countries.

Amongst Ford's many publications, perhaps the most popularly successful was the first book in the New Naturalist series, Butterflies.[13] Ford also went on in 1955 to write Moths[14] in the same series, one of only a few to have authored more than one book in the series.

Ford became Professor, and then Emeritus Professor of Ecological Genetics, University of Oxford. He was a Fellow of All Souls College, and Honorary Fellow of Wadham College. He was elected FRS in 1946, and awarded the Darwin Medal in 1954.

Ecological genetics

E.B. Ford worked for many years on genetic polymorphism.[7] Polymorphism in natural populations is frequent; the key feature is the occurrence together of two or more discontinuous forms of a species in some kind of balance. So long as the proportions of each form is above mutation rate, then selection must be the cause. As early as 1930 Fisher had discussed a situation where, with alleles at a single locus, the heterozygote is more viable than either homozygote. That is a typical genetic mechanism for causing this type of polymorphism. The work involves a synthesis of field observations, taxonomy, and laboratory genetics.[12][15]

Melanism in the peppered moth

Biston betularia f. typica is the white-bodied form of the peppered moth.
Biston betularia f. carbonaria is the black-bodied form of the peppered moth.

Ford was the supervisor of Bernard Kettlewell during Kettlewell's famous experiments on the evolution of melanism in the peppered moth, Biston betularia.

The entomologist Michael Majerus discussed criticisms that had been made of Kettlewell's experimental methods in his 1998 book Melanism: Evolution in Action.[16] This book was misrepresented in reviews, and the story was picked up by creationist campaigners. In her controversial book Of Moths and Men, Judith Hooper (2002) gave a critical account of Ford's supervision and relationship with Kettlewell, and implied that the work was fraudulent or at least incompetent. Careful studies of Kettlewell's surviving papers by Rudge (2005) and Young (2004) found Hooper's suggestion of fraud to be unjustified, and that "Hooper does not provide one shred of evidence to support this serious allegation".[17][18] Majerus himself described Of Moths and Men as "littered with errors, misrepresentations, misinterpretations and falsehoods". He concludes

"If you wade through the 200+ papers written about melanism in the peppered moth, it is difficult to come to any conclusion other than that natural selection through the agent of differential bird predation is largely responsible for the rise and fall of carbonaria".[16]

Kettlewell and Helen Spurway, then the graduate student (and later the wife) of J.B.S. Haldane, were known to have shocked Ford by catching live moths as they flitted around a light, popping them in their mouths, and eating them whole.[19] Haldane, who did not like Ford, was of the opinion that Ford and Kettlewell had attempted to capitalise on the supposed evolutionary adaptation of the main two variants of the peppered moth, for which Haldane, as early as 1924, had predicted the statistical probability of rate of change from light to melanic forms as an example of classic Mendelian genetics. In 1961, Haldane and Spurway talked to Canadian lepidopterist Gary Botting about the peppered moth and the unlikelihood of Ford and Kettlewell obtaining results that approximated Haldane's 1924 statistical calculations so closely. Botting already regarded the case of the peppered moth as tantamount to belief in Lamarckian evolution, and was of the opinion that some genetic mechanism other than bird predation was at work.[20][21]

Bibliography

Works by Ford

See also

References

  1. 1 2 Clarke, B. C. (1995). "Edmund Brisco Ford. 23 April 1901 – 2 January 1988". Biographical Memoirs of Fellows of the Royal Society. 41: 146–168. doi:10.1098/rsbm.1995.0010. Also available at JSTOR
  2. ↑ Registrar General (www.freebmd.org.uk) and England and Wales census data
  3. ↑ see for instance the "stone coffin" stunt reported from independent sources in Hooper (page 80) and Clarke (page 168)
  4. ↑ Marren P. 1995. The New Naturalists. HarperCollins, London.
  5. ↑ Cain A.J. and Provine W.B. 1992. In Berry R.J. et al. (eds) Genes in ecology. Blackwell, Oxford.
  6. ↑ Ford E.B. 1980. Some recollections pertaining to the evolutionary synthesis. In Mayr E. and Provine W.B. (eds) The evolutionary synthesis: perspectives on the unification of biology. Harvard 1980; 2nd ed 1998, p336-8. [effectively, this is an intellectual autobiography]
  7. 1 2 Ford E.B. 1940. Polymorphism and taxonomy. In Huxley J. The new systematics. Oxford.
  8. ↑ Dobzhansky T. 1951. Genetics and the Origin of Species. 3rd ed, Columbia University Press N.Y.
  9. ↑ Ford E.B. 1942. Genetics for medical students. Methuen, London.
  10. ↑ Ford, E.B. (1949). "Polymorphism". Biological Reviews. 20: 73.
  11. ↑ Chung, C.S.; Morton, N.E. (1961). "Selection at the ABO locus". Am J Human Genetics. 13: 9–27.
  12. 1 2 Ford E.B. 1964, 4th edn 1975. Ecological genetics. Chapman and Hall, London.
  13. ↑ Ford E.B. 1945, 3rd ed 1977. Butterflies. New Naturalist No. 1 Collins, London.
  14. ↑ Ford E.B. 1955, 3rd edn 1972. Moths. New Naturalist No. 30 HarperCollins, London.
  15. ↑ Huxley, J.S. (1955). "Morphism and evolution". Heredity. 9: 1–52. doi:10.1038/hdy.1955.1.
  16. 1 2 Majerus M.E.N. 2004. The Peppered moth: decline of a Darwinian disciple. (.doc download)
  17. ↑ Rudge, D.W. (2005). "Did Kettlewell commit fraud? Re-examining the evidence". Public Understanding of Science. 14 (3): 249–268. doi:10.1177/0963662505052890.
  18. ↑ Young M. 2003. Moonshine: why the peppered moth remains an icon of evolution.
  19. ↑ Hooper, p. 42
  20. ↑ "Preface," in Heather and Gary Botting,The Orwellian World of Jehovah's Witnesses (Toronto: University of Toronto Press, 1984
  21. ↑ Tihemme Gagnon, "Introduction," Streaking! The Collected Poems of Gary Botting (Miami: Strategic, 2013
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.