Differentiated sex chromosomes in mammals and other vertebrates evolved independently
but in strikingly similar ways. Vertebrates with differentiated sex chromosomes share the …

Sex chromosomes are a great example of a convergent evolution at the genomic level,
having evolved dozens of times just within amniotes. An intriguing question is whether this …

Snakes exhibit genetic sex determination, with female heterogametic sex chromosomes (ZZ
males, ZW females). Extensive cytogenetic work has suggested that the level of sex …

For over 50 years, biologists have accepted that all extant snakes share the same ZW sex
chromosomes derived from a common ancestor [1–3], with different species exhibiting sex …

I review theoretical models for the evolution of supergenes in the cases of B atesian mimicry
in butterflies, distylous plants and sex chromosomes. For each of these systems, I outline the …

The Y and W chromosomes of mammals and birds are known to be small because most of
their genetic content degenerated and were lost due to absence of recombination with the X …

To explain the frequency and distribution of heteromorphic sex chromosomes in the lizard
genus Anolis, we compared the relative roles of sex chromosome conservation versus …

Colubridae represents the most phenotypically diverse and speciose family of snakes, yet
no well-assembled and annotated genome exists for this lineage. Here, we report and …

Lizards represent unique model organisms in the study of sex determination and sex
chromosome evolution. Among tetrapods, they are characterized by an unparalleled …

Background The accumulation of repetitive sequences such as microsatellites during the
differentiation of sex chromosomes has not been studied in most squamate reptiles (lizards …