FIG. 9.

The 5′ and 3′ domains of the HERV-K genes produce a different phylogeny. A phylogenetic analysis was performed by the Pileup program (GCG package). The distance along the vertical axis is proportional to the difference between sequences; the distance along the horizontal axis has no significance. We analyzed either the complete RT genes (positions 3929 to 5633) (A), the 5′ domains (positions 4134 to 4313) (B), or the 3′ domains (positions 5337 to 5633) (C). Several similarities are apparent; e.g., clone 10.2 is at the origin of all three trees, but some notable differences in the branching orders of the trees were observed.