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He got the DNA from different organisms and measured the level of the four nitrogenous bases.
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Was hired to improve the X-Ray crystallography unit in London, England.
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Compared radiolabeled phage in two test beakers and then waited for the two phages to combine and then stopped the process. They then put it into a warning blender and spun them. The phage stayed in suspension and the bacteria stayed at the bottom because it weighs more.
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Used mice as test subjects to see what strains of DNA killed the mice. Then he heated one of the strains of DNA and put it by itself. It worked. The he combined the heated one with the non-heated one and the strain that he heated came out as no being heated at all.
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Found that the nucleotides work as a code and have a sequence that usually occurs.
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Developed a method to determine the exact sequence of nucleotides in a gene. His “Chain Termination” is used in most labs today.
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He started to do DNA fingerprinting which uses the variations in genetic codes to identify individuals. It now helps police in investigations to bring down criminals faster.
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Developed a chip that lets him see the DNA of people on a chip. Can also see the DNA of animals when he transfers the strains of DNA to the chip.
