1. Why do you think that there are two different types of DNA replication in bacteria? Does this tell us anything about the way DNA information might be inherited in bacteria? 2. If you were trying to do an experiment to identify the gene for lactose fermentation by mutagenesis, what type of selection would you use? How would you make the mutations? Why is this the best approach? 3. Why do you think there are no introns (basically) in bacterial genes? Why do you think that eukaryotes don't have polycistronic messenger RNA?.