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. Author manuscript; available in PMC: 2019 Jun 1.
Published in final edited form as: Gene Rep. 2018 Mar 21;11:74–78. doi: 10.1016/j.genrep.2018.02.007

Figure 1. Representative schematic of the evolution of the L1PA lineage.

Figure 1

During most of the primate evolution of the PA lineage, the L1 families (represented as arrows) have evolved as a single lineage where one dominant family is active until replaced by the younger subfamily. The youngest and currently active family is L1PA1 (yellow) and the higher the numbers the older the L1 family. The L1PA13A family (blue) is estimated to have been active ~60 million years ago.