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Hershy and Chace
The Hershey–Chase experiments were a series of experiments conducted in 1952 by Alfred Hershey and Martha Chase that helped to confirm that DNA was the genetic material. While DNA had been known to biologists since 1869, a few scientists still assumed at the time that proteins DNA and protein, infect bacteria, their DNA enters the host bacterial cell. -
Phoebus Levene
Phoebus Aaron Theodore Levene, M.D. was a Lithuanian-American biochemist who studied the structure and function of nucleic acids. He characterized the different forms of nucleic acid, DNA from RNA, and found that DNA contained adenine, guanine, thymine, cytosine, deoxyribose, and a phosphate group. -
Linus Pauling
Since 1919 his interest lay in the field of molecular structure and the nature of the chemical bond, inspired by papers by Irving Langmuir on the application of the Lewis theory of the sharing of pairs of electrons between atoms to many substances. In 1921 he suggested, and attempted to carry out, an experiment on the orientation of iron atoms by a magnetic field, through the electrolytic deposition of a layer of iron in a strong magnetic field and the determination of the orientation. -
Fredrik Griffith
Griffith wok was mostly with strptococci and pneumoccic bacteria. He is known fo his discovery of linkig DNA to heredity in cells. He called this the "tanforming principle" . Griffith studdied the two strands of bacteria and had one covered inn sugar and one not. he gave mice a cell of each and some died and some didint. When he combined the cells together the mice died. -
Oswald Avery
Oswald Theodore Avery ForMemRS was a Canadian-born American physician and medical researcher. The major part of his career was spent at the Rockefeller University Hospital in New York City. Avery was one of the first molecular biologists and a pioneer in immunochemistry, but he is best known for his discovery in 1944, with his co-workers Colin MacLeod and Maclyn McCarty, that DNA is the material of which genes and chromosomes are made. The Nobel laureate -
Erwin Chargaff
He received a doctorate in chemistry from the Vienna University of Technology in 1928. he investigated the chemical composition of lipids in Mycobacterium tuberculosis, the bacterium causing tuberculosis. Chargaff's Rules. In 1944 Chargaff began his investigations into the composition of DNA. By 1950 he had experimentally determined certain crucial facts that led directly to the correct elucidation of its molecular structure. -
Rosalind Franklin
Rosalind Elsie Franklin was a British biophysicist and X-ray crystallographer who made critical contributions to the understanding of the fine molecular structures of DNA, RNA, viruses, coal, and graphite. The DNA work achieved the most fame because DNA (deoxyribonucleic acid) plays essential roles in cell metabolism and genetics, and the discovery of its structure helped scientists understand how genetic information is passed from parents to children. -
Francis Crick
Francis Harry Compton Crick, OM, FRS was an English molecular biologist, biophysicist, and neuroscientist, and most noted for being a co-discoverer of the structure of the DNA molecule in 1953 together with James D. Watson. He, Watson, and Maurice Wilkins were jointly awarded the 1962 Nobel Prize for Physiology or Medicine "for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material". -
Maurice Wilkins
Maurice Hugh Frederick Wilkins CBE FRS was a New Zealand-born English physicist and molecular biologist, and Nobel Laureate whose research contributed to the scientific understanding of phosphorescence, isotope separation, optical microscopy and X-ray diffraction, and to the development of radar. He is best known for his work at King's College London on the structure of DNA. -
James Watson
American molecular biologist, geneticist, and zoologist, best known as a co-discoverer of the structure of DNA in 1953 with Francis Crick. Watson, Crick, and Maurice Wilkins were awarded the 1962 Nobel Prize in Physiology or Medicine "for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living. material". After studies at the University of Chicago and Indiana University.
