BIOL 120 Lecture Notes - Oswald Avery, Rockefeller University, Laboratory Mouse
Document Summary
The flow of genetic information (gene expression) Bioenergetics (chapter 6, 7, 8, 9) (chapter 6, 7, 8, 9) Variation by mutation as the genetic material. Early studies had indicated that the genetic material resides in the nucleus. When nucleus was stained with specific dyes, it was shown to consist of proteins and. In body cells, the amount of dna was constant. However, in gametes it was reduced to . I - prokaryotic bacterium transformation (frederick griffith"s experiment, 1927-1928) Two strains of the bacterium, streptococcus pneumoniae - a bacterium that is a causing agent of the lung disease pneumonia, were used to inject laboratory mice. A rough(r) strain virulent nonvirulent mice died mice survived. The s strain has a polysaccharide coat that protects bacteria from the host"s defense system. The r strain lacks this coat and will be destroyed by the host defense. R bacteria injection mice lived injection mice died.
