DNA Structure Discovery Timeline: The Path to the Double Helix by Constanza J. Cabaña Alvear https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr Key events and discoveries in the 20th century that led to Watson and Crick's revolutionary DNA model in 1953 en-us 2025-08-19 18:02:29 UTC 2025-08-19 18:18:08 UTC hello@padlet.com https://padlet.net/icons/8.0/svg/1f9ec.svg 1900: Rediscovery of Mendel's Laws constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908335 2025-08-19 18:02:31 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908335 1919: Phoebus Levene's Tetranucleotide Hypothesis constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908336 2025-08-19 18:02:31 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908336 1928: Frederick Griffith's Transformation Experiment constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908337 2025-08-19 18:02:31 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908337 1944: Oswald Avery, Colin MacLeod, and Maclyn McCarty Identify DNA constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908341 2025-08-19 18:02:31 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908341 1944-1950: Erwin Chargaff's Base Composition Rules constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908344 2025-08-19 18:02:32 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908344 1951-1952: Rosalind Franklin's X-ray Crystallography constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908345 2025-08-19 18:02:32 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908345 1952: Alfred Hershey and Martha Chase Confirm DNA as Genetic Material constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908348 2025-08-19 18:02:32 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908348 1952: Linus Pauling's Triple-Helix Model constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908351 2025-08-19 18:02:32 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908351 1953: Watson and Crick's Model Building constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908354 2025-08-19 18:02:32 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908354 April 25, 1953: Publication of the Double Helix Model constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908359 2025-08-19 18:02:32 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908359 1953: Supporting Evidence Published constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908364 2025-08-19 18:02:32 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908364 1958: Matthew Meselson and Franklin Stahl Confirm Replication constanzacabana1 https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908369 2025-08-19 18:02:32 UTC https://padlet.com/constanzacabana1/zttip0e5ox7qbiwr/wish/3547908369