Fig. 1.13 Transformation; gene transfer by the uptake & subsequent recombination of a fragment of exogenous bacterial DNA
2. Transduction occurs when fragments of chromosomal DNA is transferred or transduced into a second bacterium by phage. During phage replication, the bacterial DNA may be accidentally enclosed instead of the normal phage DNA, and when this particle which enclosed the bacterial DNA infects a second bacterial cell, the DNA from the first bacterium is released and incorporated into The chromosome of the second bacterium.