BIOLOGY 1P03 Lecture Notes - Lecture 13: Gentamicin, Streptomycin, Stabilizing Selection
17 Nov 2016
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Week 11 review (chapter 16 & open discussion) Q1: suppose that the petri dishes shown in step 3 of the figure contained both streptomycin and gentamicin. A small group of colonies resulted in all three dishes in step 4. Answer: all resulting colonies were resistant to both antibiotics. Intention: bacteria that do not have resistance do not survive. After incubation, only a few colonies are left (not randomized) Q2: if q = 0. 4 , p = 0. 6 and 2pq 0 . 48, the hardy weinberg equilibrium must equal to. Intention of natural selection = most favourable traits survive and reproduce. We pass these genes onto the next generation. Q4: methicillin-resistant is a bacterium that causes staph infections in hospitals. Answer: some of the bacteria already have a mutation that confers resistance to the antibiotic, allowing them to survive and pass on the advantageous gene to their offspring. Q5: the wings of insects and birds are ____ structures:
