Who is generally given credit for the modern concept of the double stranded dna helix

Francis Harry Compton Crick was born June 8, 1916. His father, Harry, was manager for a factory producing shoes and boots. His mother, Annie, was a schoolteacher. Francis went to Northampton Grammar School, where he was introduced to basic physics and chemistry. At an early age, he attempted (unsuccessfully) to produce synthetic silk in the laboratory.

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey