Fig. 6

Variation in pseudogene transcript levels. A At each stage (maternal, zygotic), the number of annotated pseudogenes expressed are similar between populations. The smaller number of pseudogenes expressed at the zygotic stage reflect that this analysis was restricted to zygotic-only genes, which are zygotic genes with no maternal expression. B Of the pseudogenes expressed at each stage, a larger proportion are differentially expressed in the Raleigh lines. C One example, the swallow pseudogene, has a 15 bp deletion shared by all of the Raleigh lines at the position shown in the alignment. D The swallow pseudogene is more highly expressed in a number of the Zambia lines, with considerable variation between lines