High evolutionary rates in nuclear genes of squamates.

摘要: We compared nonsynonymous substitution rates (Ka) of nuclear coding genes between four major groups living sauropsids (reptiles): birds, squamates, crocodiles, and turtles. Since only 9 orthologous are known in all the taxonomic groups, we searched for chicken at least one any representative poikilotherm sauropsids. Thus, analyzed three additional data sets: 28 identified various 24 crocodilians, 20 To compare lineages sauropsids, used relative-rate test with human as outgroup. show that 22/28 especially snakes (15/16), have an higher evolutionary rate than those (in mean, 30–40% faster). However, no such difference is detected turtles chicken. Higher squamates chicken, probably other could explain some difficulties resolving molecular phylogeny reptiles.