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. 2021 Jan 12;12:2. doi: 10.1186/s13100-020-00230-y

Fig. 1.

Fig. 1

Typical phylogenetic structure of retroposon and DNA transposon families. After multiple mutations have occurred in the evolving class I TE, the relative ordering of copies may be distinguished by these changes as they cosegregate. The presence of such clusters or “subfamilies” of TE copies is a good indication that they arose via retrotransposition