Theophilus Shickel Painter
Theophilus Shickel Painter (born August 22, 1889 - October 5, 1969 ) was an American insect cytologist , who became known for identifying the genes of the fruit fly popular with geneticists .
For some time (from 1921 to 1956) his work on the human genome and its spermatogenesis formed the basis of the firm belief that the human genome had 48 chromosomes . Although Painter himself initially fluctuated between 45 and 48 when it came to the number of chromosomes, he later settled on 48, which became a fixed figure until Albert Levan proved the correct number of 46 .
Painter received his doctorate from Yale University in 1913 and then worked for a year with Theodor Boveri at the University of Würzburg . In 1916 he accepted a position at the University of Texas at Austin , where he stayed until the end of his life. From 1946 to 1952 he was the successor to Homer Rainey President of the University of Texas at Austin . In 1938 he was elected to the National Academy of Sciences , which had awarded him its Daniel Giraud Elliot Medal in 1934 . Since 1939 he was a member of the American Philosophical Society
He discovered during this period (1933), for example, that an unusual structures in themselves nuclei of the salivary glands of all Fly (Diptera) to polytene chromosomes are composed of several closely paired homologous consist chromosomes.
swell
- A brief history of the human chromosome number. Spectrum of Science, June 2008, pp. 46–52.
- Handbook of Texas entry
Individual evidence
- ^ Member History: Theophilus S. Painter. American Philosophical Society, accessed November 28, 2018 .
| personal data | |
|---|---|
| SURNAME | Painter, Theophilus Shickel |
| ALTERNATIVE NAMES | Painter, Theophilus S. |
| BRIEF DESCRIPTION | American geneticist |
| DATE OF BIRTH | August 22, 1889 |
| DATE OF DEATH | 5th October 1969 |