Figure 5

Phylogeny of genomic copies showing lateral transfer of the L1MdTf _I, L1MdTf _II, and L1MdGf _I families. The tree was built using the neighbor joining method based on Kimura 2-parameters distance. The long branches suggestive of lateral transfers are indicated with black arrows. In contrast the L1MdGf_II and L1MdTf_III families, as well as the three L1MdA families, are not separated from other sequences by long branches indicating they have evolved from older families within the mouse genome. The sequences used to build this tree were randomly chosen within each of the recently active families in the mouse genome. When other sequences are selected, the topology of the tree remains the same.