Rearrange the order of the following statements to give a flow diagram showing the evolution of resistance
Question:
Rearrange the order of the following statements to give a flow diagram showing the evolution of resistance to the antibiotic streptomycin by the bacterium Escherichia coli.
1. Most of the population of E. coli is resistant to streptomycin.
2. A mutation in a DNA triplet of a plasmid, changing TTT to TTG, gives an E. coli bacterium resistance to streptomycin.
3. The resistant bacterium divides and passes copies of the R plasmid (plasmid with gene for resistance to antibiotic) to its off spring.
4. Sensitive bacteria die in the presence of streptomycin as a selective agent.
5. The frequency of the mutated gene in the population increases.
6. The resistant bacterium has a selective advantage and survives.
Step by Step Answer:
Cambridge International AS And A Level Biology
ISBN: 9781107636828
4th Edition
Authors: Mary Jones, Richard Fosbery, Jennifer Gregory, Dennis Taylor