Microbial Recombination and Gene Transfer
When composite transposons are formed

an IS element integrates with another IS element with the help of a plasmid
a small deletion occurs in the transposase gene of an IS element
a small deletion occurs in the transposase gene of an IS element and plasmid is integrated
two IS elements integrate into a chromosome with only a small distance separating them

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Microbial Recombination and Gene Transfer
In lysogeny,

a bacteriophage transfers bacterial DNA
DNA-degrading enzymes in the extracellular medium would stop the process
bacteria take up double stranded DNA from the environment
a bacteriophage genome is integrated into the bacterial genome

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