Biology 1202B Lecture Notes - Lecture 11: Nucleoside Triphosphate, The Double Helix, Nobel Peace Prize
2 Apr 2013
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1952 hershey & chase discovered dna inherited material. 1953 watson, crick & franklin discovered the dna structure double helix. 1956 tijo & levan found there were 46 linear chromosomes in the nucleus. 1963 margit & sylvan nass discovered circular chromosomes in mitochondria. Watson and crick won a nobel peace prize for discovering the double helix structure of dna. Rosalind franklin played an indirect role in this discovery because she actually discovered the helix by x-ray diffraction. However, she died at a young age from exposure to the substances she was working with. Nucleotides are the building blocks of nucleic acids. A nucleic acid is composed of a phosphate group, a pentose (5) sugar, and a nitrogenous base. These three basic components stay constant in nucleic acids but can differ in many other ways. Differences between rna and dna: ribose sugar dna lacks an oh, thymine (t) and uracil (u, strand dna = double stranded.
