What is the fine-grained topic of the following text: It also explains the genetic transformation in Bacillus subtilis; the sporulation genes; the regulatory mechanisms in the development of lytic bacteriophages in this species; the temperate Bacillus subtilis phages; the specialized transduction in Bacillus subtilis; and molecular cloning in this organism. Only return the topic.
Genetic transformation and molecular cloning in Bacillus subtilis