In this chapter, we have focused on genetic systems present in bacteria and on the viruses that use bacteria as hosts (bacteriophages). In particular, we discussed mechanisms by which bacteria and their phages undergo genetic recombination, which allows geneticists to map bacterial and bacteriophage chromosomes. In the process, we found many opportunities to consider how this information was acquired. From the explanations given in the chapter, what answers would you propose to the following questions? How do we know that bacteriophages recombine genetic material through transduction and that cell-to-cell contact is not essential for transduction to occur?

Video transcript

Hello, everyone. Here we have a question asking which of the following is a virus mediated bacterial DNA transfer and virus mediated is our key word there. So transformation is when a bacterium takes up DNA found in the external environment. So A is incorrect. B conjugation is D N A transfer between contact and fusion of two different bacterial cells. So B is incorrect. See transaction is the process of the bacteria phase, transferring foreign D N A into a bacterium. So that is correct because it is a virus mediated. So our answer here is c transaction D is going to be incorrect because both A and B are incorrect. Thank you for watching. Bye.