BIO 110 Lecture Notes - Lecture 16: Telomerase, Hockey Puck, Helicase

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Took the bacteria associated with pneumonia and injected them in mice. When he heated the streptococcus pneumoniae and injected the mice (remained healthy) Rough colonies nonpathogenic live injected mice remain healthy. Transformation- dead cells can transfer genetic heritable information to live cells. Direct evidence that dna the genetic material. Avery took the heat killed s cells and extracted and inactivated dna, rna, and protein. He then transformed r cells with the separate samples. Nitrogenous bases: adenine (a), guanine (g), cytosine c, thymine (t) in dna, uracil (u) in. Chromosomes are made up of proteins and dna. Structure would provide clues into its function and mechanism of action. Chargaff"s experiment- examining base composition of cells. % of a or t is usually different from the % of c or g. Each species has a different % of a and % of c or g. X-ray deflect as they pass through crystallized fibers of purified dna.

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