the Cavendish Watson and Crick’s model of DNA was extremely precise Main scientists: Watson Crick Wilkins Franklin Photo 51 made by Gosling (student that transferred to work with Franklin then Wilkins due her leaving because the terrible atmosphere King’s) Used in Franklin’s Nature article Shown Waston when he visited King’s clearer than anything before “number strands above all chemical organisation molecule” were provided a report given Mac Perutz Cambridge Report passed Bragg Crick February 1953 Same presented MRC t small seminar autumn 1951 there but not paying attention without people at knowing or asked for permission bunch progress herself finished on lab Worked nothing slide rule are pencil Figured out double helix + component nucleotides/bases from each strand connected they complementary biological significance stored genetic code converted data into she could died four years WatsonCrick Wlikins got Nobel Prizes their took photograph May 6th 1952 It revealed information about shape through displaying way beam X-rays scattered Franklin's allowed scientists fully understand three-dimensional structure enabled DNA’s hereditary role X-ray crystallography is method use determine crystal able be observed this its atoms arranged regularly To perform an crystallography mount purified fiber tube The generates strike material X-Rays electromagnetic waves have shorter wavelength higher energy visible light Because short wavelengths can interact electrons crystals When do scatter diffract angles indicate using patterns dark marks Scientists began diffraction DNa 1930’s 20 This it confirmed had genes Scientist William Ashbury first take photos However his blurry hard intercept At time knew composition only thought structural support until 1944 discovered contained Maurice collected 1950 Eventually would collect larger sample smaller fibers being put together these kept wet humid environment much more clear expert used carbon compounds previous france Throughout early found high water content produced different pattern low later defined dryer as A-Form wetter B-Form In addition also Ashburys came mixture two findings methods obtain First minimized how many scatter air pumping hydrogen gas around has one election doesn't well She pumped salt solution maintain write hydration After exposing 62 hours keeping B-Form resulting labeled Photograph Franklins seen during visit King's College Using knowledge concluded helical determined stranded running opposite direction 1953 3D ten nucleotides between remained verified eventually propose duplication mechanism called semi-conservative replication explain offspring They unwind Watsons 1968 book realization contribution down 1952 X-Ray photographs molecule showed contain wrapped other like ladder clearest image create photo known “Photograph 51” depiction woman studying mans world thirties started working research clash male colleagues who tried dismiss figure worked wasn't Without colleague Randall scientist Francis partner James saw photographs complete received nobel prize medicine 1962 after death award those alive During ceremony entirely dismissed however stated “two steps away solving puzzle” Imagine Rosalind accomplished if been isolated discriminated against misunderstood finding Conflicts led them isolation another perfectly fine separated went looking company laboratory where friend building molecule. some unpublished Including “Photo pictures Watson’s inspiration own picture created acknowledged