Transposable elements are used in genetic manipulation.
Transposons are transposable elements that transpose to new site in genome.
There are two different processes by which transposons move called as transpositions that are as follow:
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Conservative transposition that involves excision of specific sequence from original site to the new one.
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Replicative transposition involves in increasing the copy number. In this process transposons stay at original place whereas the copies are transposed to the new sites.
They are first transcribed into a copy of RNA that is then reversely transcribe DNA. Those are known as “retrotransposons”.
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Image: http://nitro.biosci.arizona.edu/courses/EEB600A-2003/lectures/lecture26/lecture26.html
