Calvin Bridges
Calvin Blackman Bridges (born January 11, 1889 in Schuyler Falls , New York, † December 27, 1938 in Los Angeles , California ) was an American geneticist. Together with Alfred Sturtevant and Hermann J. Muller , he was part of the Morgan group , which was doing research on the fruit fly Drosophila melanogaster in the legendary fly room at Columbia University . Bridges had a particular eye for the discovery of new mutants in the fruit fly.
In 1937 Bridges was elected to the National Academy of Sciences .
Bridges wrote his dissertation on the "Non-disjunction as proof of the chromosome theory of heredity" (German: "The non-separation of chromosomes as evidence for the chromosome theory of inheritance"). This work was the first to appear in Genetics magazine in 1916 and was considered definitive proof of the chromosome theory of inheritance. In his work on properties linked to sex in the fruit fly Drosophila melanogaster , he proposed the thesis that the genes are arranged on the chromosomes. Nettie Maria Stevens was later able to verify this hypothesis during research on the chromosomes of the fruit fly. Bridges wrote several essays in which he presented this evidence. He thanked Miss Stevens without specifying what contribution she had made. The observation and documentation of the polytene chromosomes in larval salivary gland cells in Drosophila is Bridges' most famous contribution among Drosophila researchers. The band patterns to be recognized there on the chromosomes could be used as markings by contemporary researchers.
Individual evidence
| personal data | |
|---|---|
| SURNAME | Bridges, Calvin |
| ALTERNATIVE NAMES | Bridges, Calvin Blackman |
| BRIEF DESCRIPTION | American geneticist |
| DATE OF BIRTH | January 11, 1889 |
| PLACE OF BIRTH | Schuyler Falls , New York |
| DATE OF DEATH | December 27, 1938 |
| Place of death | Los Angeles , California |