<P> There are generally three types of recombination events that can lead to this incorporation of bacterial DNA into the viral DNA, leading to two modes of recombination . </P> <P> Generalized transduction is the process by which any bacterial gene may be transferred to another bacterium via a bacteriophage, and very rarely a small number of phages carry the donor (bacterial genome) genome, (1 phage in 10.000 ones carry the donor genome). In essence, this is the packaging of bacterial DNA into a viral envelope . This may occur in two main ways, recombination and headful packaging . </P> <P> If bacteriophages undertake the lytic cycle of infection upon entering a bacterium, the virus will take control of the cell's machinery for use in replicating its own viral DNA . If by chance bacterial chromosomal DNA is inserted into the viral capsid which is usually used to encapsulate the viral DNA, the mistake will lead to generalized transduction . </P> <P> If the virus replicates using' headful packaging', it attempts to fill the nucleocapsid with genetic material . If the viral genome results in spare capacity, viral packaging mechanisms may incorporate bacterial genetic material into the new virion . </P>

Where does the transduction of light take place