Figure 3.

Sequence analysis of the Pan1 locus. (A) The gel chromatographs of PCR amplification results are shown. The template used in each lane is listed at the top of the gel. The product sizes for filled and empty sites (pre-integration size) are indicated at left. (B) Schematic diagrams for the possible evolutionary scenarios. Light-blue triangles denote the amplicons with an AluYb8 insertion; orange crosses denote the pre-integration products, and the yellow star denotes the recombination product in the common chimpanzee genome. Flanking sequences are shown as green boxes; target site direct repeats are shown in red and pink boxes. Alu elements are shown as arrows and the direction of arrow indicates the orientation (5′→3′), with the head of the arrow denoting the end of the Alu elements.