Fig. 4
From: Transposable elements and gene expression during the evolution of amniotes
Changes in the levels of ortholog/non-ortholog gene expression as a function of TE insertion. This figure shows the association between orthologous/non-orthologous gene expression levels in six species (from left to right: chicken, anole lizard, bearded dragon (pogona), platypus, opossum and human) with the presence of recent species-specific TE insertions (ssTE) or non-species specific TE insertions (nsTE) (from left to right: DNA, ERV/LTR, LINE or SINE). A weighted bootstrap approach was used to compare the median difference in gene expression levels of orthologous/non-orthologous genes with a ssTE/nsTE insertion compared to orthologous/non-orthologous gene without ssTE/nsTE. Gene expression levels are log2-transformed. Comparisons without statistically significant gene expression changes are shown in white. Statistically significant increased gene expression shown in red and statistically significant decreased gene expression in blue. Grey shading indicates no samples were available for this comparison