#Question id: 18384
#Unit 12. Applied Biology
#Question id: 4703
#Unit 11. Evolution and Behavior
Within a few weeks of treatment with the drug 3TC, a patientʹs HIV population consists entirely of 3TC-resistant viruses. How can this result best be explained?
#Question id: 3755
#Unit 3. Fundamental Processes
In E. coli, there is a mutation in a gene called dnaB that alters the helicase that normally acts at the origin of replication. Which of the following events would you expect to occur as a result of this mutation?
#Question id: 11424
#Unit 10. Ecological Principles
In robert h. Whittaker's approach to relating terrestrial biomes and climatic variables, the principal biomes fall in a triangular area that does not include climates with __________.
#Question id: 4362
#Unit 3. Fundamental Processes
How are bacteria able to change their patterns of protein synthesis so quickly in response to environmental changes?