Research Article

Adaptive Evolution Hotspots at the GC-Extremes of the Human Genome: Evidence for Two Functionally Distinct Pathways of Positive Selection

Figure 2

Comparative relationship between low- (upper rows) and high-GC gene groups (lower rows) and intron length (left) and exon number (middle), and their ratio (right).
856825.fig.002a
(a) GC 41(%)
856825.fig.002b
(b) GC 64(%)