The Use Of Infrared Light On The And Of The Dna

968 WordsAug 28, 20144 Pages
The five most prominent biologists in Section 2 include Sister Miriam Michael Stimson, Lynn Margulis, Barbara McClintock, Hans Spemann, Francis P. Rous. First of all, Sister Miriam Stimson studied DNA with the use of infrared light. In order to be able to see only the A’s, C’s G’s and T’s of the DNA with the light, she created “pills” of potassium bromide which “were invisible to infrared.” Because of her experiments with the potassium bromide discs and infrared light she agreed with Watson and Crick’s theory: “DNA bases had only one natural shape, the one that produced perfect hydrogen bonds.” This discovery gave biologists an idea about the construction of DNA. The next biologist who was important in Section 2 was Lynn Margulis. Even though her original work was false, this theory she had later revealed more. Margulis’s theory was endosymbiosis, which basically she saw as “proof that life has more ways of mixing and evolving than conventional biologists ever dreamed.” However this theory that Margulis created shed light on mitochondria. They realized that mitochondria had relatives such as typhoid bacteria and also found how important mitochondria was for science. In addition, her theory assisted in helping figure out why the evolution process had stalled. Barbara McClintock was the next biologist who was major in this section. McClintock and her assistant Creighton used corn to find their discoveries. They both knew each corn’s chromosomes very well, so it made

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