Phylogenomics of nonavian reptiles and the structure of the ancestral amniote genome

@article{Shedlock2007PhylogenomicsON,
  title={Phylogenomics of nonavian reptiles and the structure of the ancestral amniote genome},
  author={Andrew M. Shedlock and Christopher W. Botka and Shaying Zhao and Jyoti Shetty and Tingting Christina Zhang and Jun S. Liu and Patrick Deschavanne and Scott V. Edwards},
  journal={Proceedings of the National Academy of Sciences},
  year={2007},
  volume={104},
  pages={2767 - 2772}
}
We report results of a megabase-scale phylogenomic analysis of the Reptilia, the sister group of mammals. Large-scale end-sequence scanning of genomic clones of a turtle, alligator, and lizard reveals diverse, mammal-like landscapes of retroelements and simple sequence repeats (SSRs) not found in the chicken. Several global genomic traits, including distinctive phylogenetic lineages of CR1-like long interspersed elements (LINEs) and a paucity of A-T rich SSRs, characterize turtles and archosaur… Expand
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TLDR
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TLDR
This study is the first to analyze CR1 evolution in a genome-wide and amniote-wide context and the data strongly suggest that the ancestral amNIote genome contained myriad CR1 elements from multiple ancient lineages, and remnants of these are still detectable in the relatively stable genomes of crocodilians and turtles. Expand
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