BIOL 112 Lecture Notes - Lecture 19: Chromosome, Lytic Cycle, Dmitri Ivanovsky

• School: McGill University
• Department: Biology
• Course: BIOL 112
• Professor: Frieder Schoeck

Document Summary

Biol 112 lecture 22 mutagens, viruses and bacteria. Mutagens: agents that cause changes in the dna sequences, chemical, radiation, viruses o. May kill a cell or disable and make it cancerous. Transmitted to daughter cells but not to progeny: germ line mutations. Can be transmitted to progeny and become a polymorphism in the gene pool. Dmitri ivanovsky and tobacoo mosaic virus o. Virus classification: host specificity and pathology, genetic material (rna or dna, size and shape (electron microscopy) They use a variety of genetic material: single stranded dna, double stranded, single stranded rna and double stranded, circular or linear. Bacteriophage cycle o: lytic cycle get name from lysis which is the process of breaking membrane o. New genotypes of phage; viral recombination o. Bacterial sex o: result of experiment. F plasmid: high frequency of recombination strain, plasmid integrated into bacterial chromosome o o.