Biology 1202B Lecture Notes - Lecture 10: Isotopes Of Nitrogen, Moa, Polynucleotide
10 Mar 2016
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Document Summary
Thus far we have talked about enzymes and their roles in biological pathways. Proteins may perform a variety of other functions in the cell as well. Catalogued sites where all (or nearly all) present day humans have the same snp but differ from neanderthal. Early 1900"s scientists thought protein was the molecule of heredity. They took a lot of convincing that it was dna . Despite results of avery and griffith, not all were convinced. Results (finally) prove dna is the genetic material. Phosphate backbone (grey) 5" end 3" end. A-t (2 hydrogen bonds) g-c (3 hydrogen bonds) The meselson & stahl experiment (1958: coli grown on medium with 15n. Pcr allowed for the study of ancient dna. Many studies isolated dna from amber encased organisms. Bone fragments from a coal mine in utah. Isolated dna, pcr amplified region of mitochondrial cytochrome b, sequenced dna. Determined that sequence was different from other sequences in the database.
