I tautuhia e Hemi Watson rāua ko Francis Crick te hanganga o te DNA i te tau kotahi mano e 1953, mā te whakamahi i te mahi mōhiohio mōataata X-ray o Rarakina Toruhimana me MauriceUne e tohu ana he hanga rongoā a DNA (i.e., he āhua pēnei i te corkscrew).