BIOL207 Lecture Notes - Lecture 4: Srb, Heredity, Citrulline

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL207
• Professor: Mike Harrington

Document Summary

[lecture 4 genes and chromosomes] & [lecture 5: genes encode. Alternating between diploid and haploid produced new and possibly more favourable allele combinations. Before this point in time, it was understood that genes control heredity and that enzymes catalyze reaction. Garrod studies alkaptonuria (associated to arthritis and black urine: from his study, he concluded that the enzyme that breaks down ha in humans normally must be defective in people with black urine. But this enzyme is not being produced. Common knowledge before this time was that genes create proteins. Experiment conducted on orange bread mold: normal strains are called prototrophic. Require carbon source and energy source to survive. Can grow on minimal media (mm: defective strains are called auxotrophic. Need to grow on complete media (cm: process: Auxotrophic strains created by subjecting an isolated prototrophic strain (wild type strain) to dna damaging agents (mutagens) and then collected.