https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f Made with a taste for adventure en-us 2021-05-03 05:02:24 UTC 2024-02-22 07:31:14 UTC hello@padlet.com taimalkhouri75 https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1483846640 In 1869, Friedrich Miescher isolated "nuclein," DNA with associated proteins, from cell nuclei. He was the first to identify DNA as a distinct molecule.]]> 2021-05-03 05:03:14 UTC https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1483846640 taimalkhouri75 https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1483852691  British bacteriologist whose 1928 experiment with bacterium was the first to reveal the “transforming principle,” which led to the discovery that DNA acts as the carrier of genetic information. ]]> 2021-05-03 05:06:32 UTC https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1483852691 taimalkhouri75 https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1483860649 1930,  In a very simple experiment, Oswald Avery's group showed that DNA was the "transforming principle." When isolated from one strain of bacteria, DNA was able to transform another strain and confer characteristics onto that second strain. DNA was carrying hereditary information. ]]> 2021-05-03 05:10:13 UTC https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1483860649 taimalkhouri75 https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1483868208 1952 , Hershey and Chase concluded that protein was not genetic material, and that DNA was genetic material. ... The Hershey-Chase experiments mostly ended scientists' suspicions that genes were made of protein rather than DNA.]]> 2021-05-03 05:14:12 UTC https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1483868208 taimalkhouri75 https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484620440 In 1949, Chargaff discovered that the proportions of bases in DNA depend on the species the DNA comes from. This was a major break from what scientists had believed until then.]]> 2021-05-03 10:44:55 UTC https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484620440 taimalkhouri75 https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484654073 Taken in 1952, this image is the first X-ray picture of DNA, which led to the discovery of its molecular structure by Watson and Crick. Created by Rosalind Franklin using a technique called X-ray crystallography, it revealed the helical shape of the DNA.]]> 2021-05-03 11:02:56 UTC https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484654073 taimalkhouri75 https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484663052 In February 1953, Linus Pauling proposed a structure for deoxyribonucleic acid, or DNA, in their article “A Proposed Structure for the Nucleic Acids,” henceforth “Nucleic Acids.” In the article, Pauling ]]> 2021-05-03 11:07:57 UTC https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484663052 taimalkhouri75 https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484667048 In 1953, Wilkins crystallized DNA in a form suitable for quantitative X-ray diffraction work and obtained the best quality X-ray images seen at that time. ]]> 2021-05-03 11:10:09 UTC https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484667048 taimalkhouri75 https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484671491 The discovery in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (DNA), by James Watson and Francis Crick marked a milestone in the history of science and gave rise to modern molecular biology, which is largely concerned with understanding how genes control the chemical processes within ]]> 2021-05-03 11:12:29 UTC https://padlet.com/taimalkhouri75/rzvpbd2m3c10bo9f/wish/1484671491