Today is the birthday of Erwin Chargaff, born in 1905 and known for Chargaffs rules which led to the discovery of the DNA double helix. He discovered that the amounts of adenine and thymine in DNA were always about the same as were the amounts of cytosine and quanine. This led to the idea that they must be somehow paired. He died in 2002 at the age of 97.
Also born on this day were:
Christiaan Eijkman, a Dutch physician and Nobel Laureate, born in 1858.
Aaron Klug, born in 1926, a Lithuanian-born British chemist and biophysicist, he received the Nobel Prize for his work on crystallographic electron microscopy and his structural elucidation of biologically important nuclei acid-protein complexes.
Gennidy Nikonov, born in 1950, a Russian weapon engineer for his design of the AN-94 attack rifle.