Lecture 12 - Bacteria:...

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Bacteria: Extremely diverse organisms required for basic    biological processes such as nitrogen fixation. also…cause a number of human diseases including     strep throat, food poisoning, the “plague”, etc. Differ from eukaryotes in that there is a single, circular chromosome instead  of several linear ones and the chromosome is not enclosed in a separate  compartment (i.e, no nucleus). There is no meiosis and no true diploid state. Best studied bacterial species is E. coli
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Strain 1 Insertion sequences (IS) are transposable elements that can move around the bacterial genome. inverted repeats are present flank the IS    Strain 2 Different bacteria have different numbers of IS elements located in different places.
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    resistance to drugs or phages, auxotrophies, colony     morphology, ability to grow, ability to metabolize Nomenclature: Genes are indicated by three lower case letters indicating function of the gene followed by a letter.  Wild-type is indicated by a plus sign, a non-functional allele by a minus.                                    
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This note was uploaded on 01/27/2010 for the course BIO 89329 taught by Professor Hollingsworth during the Spring '10 term at SUNY Stony Brook.

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Lecture 12 - Bacteria:...

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