Figure 9. The elephant IgL locus.

The elephant Igκ locus is distributed over three scaffolds (202, 50, and 86), and the Igλ locus is located on scaffold 68. Overall configurations are drawn approximately to scale. The potentially functional V_κ and V_λ genes are shown as filled bars, while pseudogenes are represented by open bars and indicated with the letter p. Double slashes indicate gaps >10 kb. The unidirectional arrowheads below V_κ gene segments on scaffold 86 indicate that their transcriptional direction is opposite to downstream J_κ segments. However, the unidirectional arrowheads on scaffolds 202 and 50 do not represent different transcriptional directions from the identified J_κ gene segment; they merely indicate a transcriptional direction different from that of the remaining V_κ gene segments in the scaffold.