BIO 1140 Lecture Notes - Lecture 19: Signal Transduction, Thomas Hunt Morgan, Maurice Wilkins

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Understand the structure and organisaion of dna (including nucleoides etc. ) Understand and demonstrate the steps involved in dna replicaion. Know how to replicate dna, demonstrate this, when it happens in a cells life, why we replicate. Dna, how to correct mistakes and protect dna. In 1911, thomas hunt morgan was able to associate traits (genes) to a chromosome by studying sex-linked inheritance in drosophilia melanogaster. In 1928, frederick friith ideniied properies of strains in mammals. In 1940, oswold avery determined that these properies were related to dna (not rna or protein) In 1952, alfred hershey was able to inally demonstrate that dna was indeed the hereditary molecule by using phages and escherichia coli. Dna is the geneic material of cells, textbook explains the link between dna, rna and protein. In 1953, james watson and francis crick determined the molecular structure of dna. They were awarded the nobel prize in 1962 (with maurice wilkins, but not rosalind franklin)