Joseph G. Gall
Joseph Grafton Gall | |
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Born | April 14, 1928 |
Alma mater | Carnegie Institution, Yale University |
Doctoral advisor | Donald Poulson |
Notable students |
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Joseph Grafton Gall (born April 14, 1928) is an American
Research career
Gall was called "the father of cell biology" in his citation for the Lasker award.[5] Gall was a major contributor to the theory that a chromosome contained one DNA molecule running from one end to the other. In chromosomes after DNA replication, each of the two daughter chromatids had one DNA molecule running its length. He revealed this structure by examining amphibian lampbrush chromosomes in the microscope after staining for DNA and for RNA and also after treatment with enzymes that break down DNA or RNA. Although the Feulgen stain for DNA was not sensitive enough to stain the DNA in the loops of these chromosomes, but only stained the long axis of the structure, the loops were sensitive to DNase so they must contain DNA that maintained their loop structure. Later, staining with DAPI, a more sensitive dye, revealed the DNA running through each loop and then returning to the axis of the chromosome.[6] He also unveiled the structure and location of the rDNA, the part of the genome that specifies the ribosomal RNA and made many more important discoveries about nuclear structure.[7]
Gall and then-graduate student
When Elizabeth Blackburn, 2009 Nobel laureate in Medicine, worked with Gall they analyzed the ends of chromosomes and identified the major short repeated sequence that occurs in telomeres of most higher organisms. Blackburn and her student
Joseph Gall currently heads the Gall Lab, a component of the Department of Embryology in the Carnegie Institution for Science, in Maryland.[9]
Role as a mentor of women scientists.
Gall is credited with encouraging women biologists, a group sometimes called "Gall's Gals", in an era when this was relatively uncommon.[10] A number of his former students have been elected to the National Academy of Sciences and won major research prizes including the Nobel Prize. His students have included Joan Argetsinger Steitz, Mary-Lou Pardue, and Elizabeth Blackburn.
One of his students who went on to do important work in cytology is Susan Gerbi. She co—wrote an article about Gall's life and work in 2003.[11] In her conversations with Gall, when asked to explain his encouragement of women in the sciences, he spoke about his mother. Gifted in math and science, she had been the first woman in her family to attend college, graduating in the 1920s. She became a homemaker, not a scientist. But she urged a young Joseph Gall to explore the natural world, encouraging him to catch bugs and bring them into the house so together they could identify the creatures using scientific reference books. "It never occurred to me that a woman's aptitude was different than a man's," Gall said. "My father -- a lawyer -- was afraid of animals and insects. So, if anything, maybe I thought it went the other way.".[10]
Awards
- National Academy of Sciences, 1972
- EB Wilson Award, 1983
- Lasker Award, 2006
- Louisa Gross Horwitz Prize, 2007
Legacy
In 2005, Gall was featured in a series of interviews with well-known television personality, Bill Nye, for the Science Channel's 100 Greatest Discoveries series.[12]
References
- ^ Lasker Foundation
- ^ "Joseph Grafton Gall". American Academy of Arts & Sciences. Retrieved 2022-04-26.
- ^ "Joseph Gall". National Academy of Sciences. Retrieved August 28, 2018.
- ^ "APS Member History". search.amphilsoc.org. Retrieved 2022-04-26.
- ^ a b "2006 Awards". Lasker Foundation.
- PMID 9529374.
- ^ a b Anna Azvolinsky, (2017) “Captivated by Chromosomes,” https://www.the-scientist.com/profile/captivated-by-chromosomes-30181
- ^ PMID 4895535.
- ^ [1] Gall Lab website (accessed 15 May 2015)
- ^ a b Mastony, Colleen (6 October 2009). "Female scientists' family tree traces roots to Yale professor". Chicago Tribune. Retrieved 2015-10-05.
- S2CID 85162176.
- ^ "100 Greatest Discoveries". Carnegie Institution for Science. Carnegie Institution of Washington. 28 March 2005. Retrieved 4 February 2014.
External links
- Home Page at the Carnegie Institution
- Louisa Gross Horwitz Prize bio
- [2] Cell Biology - Joseph G. Gall, Journal of Cell Science (1 October 2003) - A tribute to Gall to mark his 75th birthday
- [3] A Remarkable Career In Science - A symposium arranged by Carnegie Institution for Science to honor Gall on his 85th birthday
- iBioMagazine: In Situ Hybridization Archived 2017-07-06 at the Wayback Machine
- iBioMicroscopy course: Early History of Microscope Archived 2016-03-27 at the Wayback Machine