Figure 27.30 - Stages in lateral gene transfer (LGT).

Figure 27.30. Stages in lateral gene transfer (LGT). The evolution of four species and one example of LGT are shown. Some key steps in LGT are labeled: (a) Divergence of genomes of different lineages; (b) movement of DNA from one lineage to another; (c) maintenance and replication of the foreign DNA; (d) possible positive selection for the foreign DNA; (e) spread into the new species’ population; (f) amelioration. (Modified from Penny D. and Poole A. Curr. Opin. Genet. Dev. 9: 672–677, © 1999 Elsevier.)

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