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Experimental Evolution. Silke & Elsa Hopkins Microbiology. Selection for fit types in a variable population Selection pressure: antibiotic Mutants survive Are Nal R mutants less fit in an antibiotic -free environment? Tradeoff?. - PowerPoint PPT Presentation
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Experimental Evolution
Silke & Elsa
Hopkins Microbiology
• Selection for fit types in a variable population
• Selection pressure: antibiotic
• Mutants survive
• Are NalR mutants less fit in an antibiotic-free environment? Tradeoff?
• Select for NalR mutants (different Nal-Conc) correlation between selective pressure and number of mutants?
• Nucleotide sequence of candidate genes Mutations?
• Recovery of fitness during many generations when selection removed? Duration?
Suggestions:
Maintain selective pressure for NalR Mutant up to “cage fight” ?
Plate replicates and/or various timepoints