BLG 151 Lecture Notes - Lecture 12: Purine, Microbial Genetics, Deoxyribonuclease
2 Dec 2016
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13. 1 experiments using bacteria and viruses demonstrated that dna is the genetic. Study of structure and function of hereditary material and the mechanisms by which organisms pass traits from one generation to the next. All dna present in a cell or virus. Bacteria and archaea generally have one set (haploid 1n) Eukaryotes have two sets (diploid 2n) Specific set of genes an organism possesses. 1952 alfred hershey and martha chase. Griffith in 1928 observed the change of non virulent organisms into virulent ones via. Macleod and mccarty in 1944 showed that the transforming principle was dna. Used different strains of the bacteria to show pathogenic trait caused death in mice. Showed pathogenic trait could be passed onto non pathogenic bacteria. Repeated griffith"s experiment with more advanced biochemistry. Earlier experiments done by avery, macleod, and mccarty had shown that only dna extracts from s cells caused transformation of r cells to s cells.
