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DNA In The 19th Century

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In the 19th century Gregor Mendel started to recognize inheritances or traits passed from parents to offspring in a very consistent pattern. Thanks to new technology in the 1940s and the 1950s like higher powered microscopes scientists could see what they could never see before. They discovered chromosomes and found that they were made out of something called DNA as well as proteins. Further experiments led them to realize that DNA held the code of life. Soon enough scientists started asking what DNA was made of and why it is so important. What they discovered was that DNA consists of four nitrogenous bases called adenine, thymine, cytosine, and guanine. Scientists still wanted to learn how all living things in this world could be created by …show more content…
Raymond Gosling, a student of Dr. Wilkins suggested using X-Ray Diffraction which would allow one to see the pattern and placement of atoms and molecules in a DNA strand. Due to this technology Wilkins and Gosling discovered DNA had a helix shape but they did not know how atoms were arranged in that helix. Watson and Crick later joined the race and received the puzzle piece from Wilkins and Gosling to get started. Rosalind Franklin started working with Gosling and they soon discovered through X-ray diffraction that chromosomes had a clear x shape and DNA was made of helixes. Eventually scientists started using ball and stick models to discover how atoms and molecules would bond in a DNA strand. Then by complete accident Franklin and Gosling discovered that there were ten layers in every twist of the helix which meant a DNA helix had a two nanometer diameter. Gosling soon made another discovery; adenine and guanine were interchangeable and thymine and cytosine were interchangeable. Quickly after people started discovering the shapes of the bases. Once this was completed everyone soon knew how DNA was

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