BIOL 2905 Lecture Notes - Lecture 5: Penicillin, Intron, Ribosomal Rna
23 Sep 2015
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Manure fertilization article, using manure from cows fed with antibiotics (to keep bacteria away, found resistant bacteria in both manure of cows fed with and without antibiotics, genetic info, 1st manure. Antibiotic free manure vs. manure of cows fed antibiotics. No sure: proposed explanation (not really sure if correct or not) maybe due to heavy metals, they were looking for b-lactamase resistance. Genetic background (ppt: dna made up of nucleotides (base sequence, difference in base sequence is what makes individuals different. In prokaryotes: transcription and translation occur at same time. Can have a phenotype (an observable characteristic: prokaryotic gene expression, have dna sequence called promoter. Binds proteins called transcription factors: transcription factors binds rna polymerase (synthesize rna, different transcription factors recognize different promoters, activates different genes, have several genes on 1 mrna. Dna for this rna is called an operon: ribosomes on poly-cistronic dna, cistron (only in bacteria) Is a gene in an operon: in example of slide.
