Fig. 5
Schematic representation of microsatellite repeat motif amplification on the Siamese cobra W chromosome and other amniote sex chromosomes sharing the same motifs. Phylogeny was partially derived from Pyron et al. [43]. Regions where the microsatellite repeat motifs were hybridized are shown to the right of the chromosomes. Chromosome numbers indicate the pink-tailed worm-lizard (Aprasia parapulchella, APA), the Japanese striped snake (Elaphe quadrivirgata, EQU), the tiger keelback snake (Rhabdophis tigrinus, RTI), the habu Protobothrops flavoviridis, (PFL), the Japanese moccasin Gloydius blomhoffii, (GBL), the eastern three-lined skink (Bassiana duperreyi, BDU), the central bearded dragon (Pogona vitticeps, PVI), the eastern long-necked turtle (Chelodina longicollis, CLO), the tiger snake (Notechis scutatus, NSC), the tiger keelback snake (Rhabdophis tigrinus, RTI), the dragon snake (Xenodermus javanicus, XJA), the South American rattlesnake (Crotalus durissus, CDU), the masked water snake (Homalopsis buccata, HBU), the African house snake (Boaedon fuliginosus, BFU and Boaedon olivaceus, BOL), the milk snake (Lampropeltis triangulum, LTR), the Ruthven's kingsnake (Lampropeltis ruthveni, LRU), the corn snake (Pantherophis guttatus, PGU), the twin-spotted ratsnake (Elaphe bimaculata), the leopard snake (Zamenis situla, ZSI), the grass snake (Natrix natrix, NNA), and the garter snake (Thamnophis sirtalis, TSI) showing shared microsatellite repeat motifs with the Siamese cobra W chromosome. Chromosomal locations of repeat motifs in the amniotes were obtained from the following sources: A. parapulchella from Matsubara et al. [53], E. quadrivirgata, R. tigrinus, P. flavoviridis and G. blomhoffii from Matsubara et al. [27, 28], B. duperreyi, P. vitticeps, C. longicollis, N. scutatus and R. tigrinus from Matsubara et al. [26, 27], X. javanicus from Rovatsos et al. [54], C. durissus, H. buccata, B. fuliginosus, B. olivaceus, L. triangulum, L. ruthveni, P. guttatus, E. bimaculata, Z. situla and N. natrix from Augstenová et al. [25], and T. sirtalis from Perry et al. [42]