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Isolated the genetic material from white blood cell nuclei. He noted it had an acidic nature and called it nuclein. -
·Determined the components of DNA:
·adenine, guanine, thymine, cytosine, deoxyribose, posphate
·Defined phosphate-sugar-base units called (nucleotides). -
·Studied the epidemiology and pathology of 2 strains of Streptococcus pneumoniae.
In January 1928 reported the first widely accepted demonstration of bacterial transformation. -
Around 1951-1952, he was studying DNA fibers with X-ray diffraction and shared some results (without Franklin's knowledge) that later helped Watson and Crick. -
Between 1951 and 1953, she produced very clear X-ray diffraction images of DNA, including the famous Photo 51, which was crucial for confirming the double helix structure. -
Used paper chromatography and UV spectroscopy to examine the abundance of the nucleobases and he to notice, and he started to notice something VERY odd… -
She was his research assistant who carried out of the experiment, using radioactive labeling to show that DNA, not proteins, carry genetic material. -
He was a scientist who worked with bacteriophages and helped design the famous experiment that tested whether DNA or proteins carry genetic information -
Linus Pauling and Robert Corey proposed a triple helix structure for DNA. Just before Watson and Crick published their double helix model.