Create your own unique website with customizable templates. Original strand Replicated strand 1 Replicated strand 2 Course Hero is not sponsored or endorsed by any college or university. The case study - review. It was also important to figure out that the two strands run in opposite directions and that the molecule had a specific base pairing. With only this knowledge to go off of, many people believed that DNA was to “simple” to be the macromolecule of life. This preview shows page 5 - 8 out of 11 pages. P?$�e�q�)� �8�K�C��)B��|�� ob/��ޯ���&���A�J!`V"q��?C%���fL��MT�}�[�DO}}�*v!�%T�~�R���$_�L%E�P�*�� The strands that make up DNA structure run "anti-parallel" to each other. DNA Replication Prior to cell division DNA has to make a copy of itself= DNA Replication Follows a template mechanism for this process much like a photograph is made from a photo negative. 974 0 obj <>stream In order to solve the elusive structure of DNA, a couple of distinct pieces of information needed to be put together. One was that the phosphate backbone was on the outside with bases on the inside; another that the molecule was a double helix. Putting the Pieces Together: The Discovery of DNA Structure and Replication Part I – Setting the Stage In the autumn of 1952, while the weather in London, England, was cooling down, the race to discover the structure of DNA was heating up inside two rival laboratories: the Cavendish Lab at Cambridge University and the laboratory of J.T. ���Jij4kP�@+�CS�P>-(ud��>�#\@!�D�0�s�`��B��c�< If you're seeing this message, it means we're having trouble loading external resources on our website. Before DNA structure was discovered, all society knew about DNA was that DNA was most likely the main molecule of life and that it consisted of four. V�b��x�"�����Q"���:��X�(��,�����V�GwjN�̫��5�uf��4;c�}g��۳��A�z;�sYl��%��l�9'����C�u`��eE|�\ rswH�:�K��y$��[=9LR�/��P\�L�����Qt�?���d_��p,���. He did not know what it did, what it looked like, or even its purpose, but he discovered it inside a cell's _____ chromosomes. They are mirror images. hޜ��n�8������AIT%:���;�Tr��vo�����~���"��J) (�~H���K\`�> -B='�1��lzĦ6#wpE^��0����D��*�9R> L5&��޿��k��i%��P�����b�,��B��F�NWda揎�^U��`�^]��Ws�+�"^��d�R�D+^N�zU�����po.z��dWj� )�I0 1�P1CK0ed��@T�~HeA�~@bzj��@� �� endstream endobj 975 0 obj <>stream Each group will present on their chosen molecular. Putting the Pieces Together: Before DNA structure was discovered, all society knew about DNA was that DNA was most likely the main molecule of life and that it consisted of four different kinds of bases (A, G, T, and C). DNA was discovered in 1868 by a Swedish scientist. STUDY. nucleus. Case study: “Putting the Pieces Together: The Discovery of DNA Structure and Replication” • Written responses to case study will be collected next class (finish at home if necessary) • Quiz on chapter 12 & lecture 11 – 15 minutes 12 Mar 28 Transcription • Before … h�25V0P���w�/�+Q����L)�65 PLAY. A and T pair together and are bonded by 2 hydrogen bonds, G and C pair together and are bonded by 3 hydrogen bonds, A and G are purines, which means they are double ringed, T and C are permidines, which means they are single ringed. Discovery of DNA, Structure, and Replication. The structure of DNA double helix and how it was discovered. Chargaff, Watson and Crick, and Wilkins and Franklin. In the 1890's and 1900's, scientists determined that the hereditary material was located in _____ protein, DNA. Genetics PCB 3063 syllabus Spring 18 (1).pdf, Florida International University • PCB 3063. Erwin Chargaff was one of a handful of scientists who expanded on Levene's work by uncovering additional details of the structure of DNA, thus further paving the way for Watson and Crick. 0:05 Skip to 0 minutes and 5 seconds We began by introducing you to forensic science through the medium of a case study, and we will end it by reviewing how each chapter showed how science contributed to the development of the investigation.

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