Retroposon
![Phylogenetic tree of marsupials derived from retroposon data[1]](/Images/godic/202502/07/Phylogenetic_tree_of_marsupials_derived_from_retroposon_data_-_journal.pbio.1000436.g0024116.png")
Retroposons are repetitive DNA fragments which are inserted into chromosomes after they had been reverse transcribed from any RNA molecule.
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