After studying this chapter you will be able to understand: A virus has a genome but can reproduce only within a host cell; viruses, viroids, and prions are formidable pathogens in animals and plants; rapid reproduction, mutation, and genetic recombination contribute to the genetic diversity of bacteria; individual bacteria respond to environmental change by regulating their gene expression;. | Lecture Biology (7th edition) - Chapter 18: The genetics of viruses and bacteria
