Fig 4. Schematic representation of the distribution of interstitial telomeric sites (ITSs) in centromeric or pericentromeric regions on chromosomes and amplification of telomeric repeats on sex chromosome in lizards and snakes.

Phylogeny was partially derived from Pyron et al. [39]. Distribution of ITSs and telomeric repeat amplifications of lizards and snakes were also obtained from Young et al. [11], Matsubara et al. [37], Augstenová et al. [34], Rovatsos et al. [23,30] and Srikulnath et al. [7,9].