BIOL 1F90 Lecture Notes - Lecture 5: Adult Stem Cell, Deoxyribonuclease, Erwin Chargaff
11 Nov 2016
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Document Summary
Chapter 10 nucleic acid structure & dna replication. Functions as a dynamic blueprint for the construction of living organisms. Allows organisms to survive in their environments. Must meet the following criteria: information, transmission, replication, variation. In late 1800s, scientists postulated that a chemical substance exists within cells that is responsible for the transmission of traits. Researchers became convinced chromosomes were the hereditary material: observed to double and divide during cell division, found to contain dna and protein. In 1920s to 1940s, scientists expected that protein would be identified as the genetic material. In late 1920s, frederick griffith was studying two strains of a bacterium called. Smooth (s): secretes a polysaccharide capsule and look smooth when grown on a. Petri plate: cause infections that are usually fatal in mice. Pathogen: able to cause disease: capsule prevents mouse immune system from killing the bacteria.
