Explain the concept of coevolution in terms of host-pathogen interactions
What will be an ideal response?
Answer: The host and pathogen both evolve and affect each other. As the pathogen evolves virulence factors, a host evolves defenses against them. This coevolution drives the establishment of a balanced equilibrium, which favors the survival of both the host and the pathogen. If this balance is not obtained, the host could be killed due to the infectious agent's pathogenicity, which would also in turn result in death of the pathogen as well.
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True or false: Natural selection is always the driving force of speciation
A. true B. false
If the heterozygous phenotype is intermediate between those of the two different homozygotes, this is called Select one:
a. epistasis. b. independent assortment. c. codominance. d. incomplete dominance. e. polygenic.
How can prokaryotes be considered to be more successful on earth than humans?
a. prokaryotes are much more numerous and have more biomass b. prokaryotes occupy more diverse habitats c. prokaryotes are more diverse in metabolism d. only b and c are correct e. a, b and c are correct
This drug targets the activate site of the Bcr-Abl protein kinase and inhibits the enzyme
a. Lapatinib b. Gleevec c. Trasuzumab d. None of the above