Fig. 4From: Orthologous endogenous retroviruses exhibit directional selection since the chimp-human splitExcess divergence of HERV-H grouped by categorical transcription levels in human stem cells. The difference in divergence between PV (ERVs) and RM+ (selfish DNA) of 63 HERV-H loci (12 “highly active”, 22 “moderately active”, 29 “inactive”) increases with their categorical transcription levels [24] across hESC and hiPSCBack to article page