Cited by 850Genome Rearrangement AlgorithmsGenomic variations and chromosomal abnormalitiesChromosomal and Genetic Variations

Evolution's cauldron: Duplication, deletion, and rearrangement in the mouse and human genomes

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Kent, W. James, Baertsch, Robert, Hinrichs, Angie, Miller, Webb, Haussler, David·2003·Proceedings of the National Academy of Sciences

Abstract

This study examines genomic duplications, deletions, and rearrangements that have happened at scales ranging from a single base to complete chromosomes by comparing the mouse and human genomes. From whole-genome sequence alignments, 344 large (>100-kb) blocks of conserved synteny are evident, but these are further fragmented by smaller-scale evolutionary events. Excluding transposon insertions, on average in each megabase of genomic alignment we observe two inversions, 17 duplications (five tandem or nearly tandem), seven transpositions, and 200 deletions of 100 bases or more. This includes 160 inversions and 75 duplications or transpositions of length >100 kb. The frequencies of these smaller events are not substantially higher in finished portions in the assembly. Many of the smaller transpositions are processed pseudogenes; we define a “syntenic” subset of the alignments that excludes these and other small-scale transpositions. These alignments provide evidence that ≈2% of the genes in the human/mouse common ancestor have been deleted or partially deleted in the mouse. There also appears to be slightly less nontransposon-induced genome duplication in the mouse than in the human lineage. Although some of the events we detect are possibly due to misassemblies or missing data in the current genome sequence or to the limitations of our methods, most are likely to represent genuine evolutionary events. To make these observations, we developed new alignment techniques that can handle large gaps in a robust fashion and discriminate between orthologous and paralogous alignments.

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  • Comparing induced pairwise human-dog alignments to direct pairwise alignments computed using the chains and nets pipeline, the same level of Jaccard similarity was found for both high- and low-quality assembly alignments.

    “Reinforcing this, comparing the induced pairwise alignments of human–dog to direct pairwise alignments computed using the established chains and nets pipeline30, we find the same level of Jaccard similarity for both the high- and low-quality assembly alignments (Supplementary Fig. 5).”

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Authors
Kent, W. J., Baertsch, R., Hinrichs, A., Miller, W., & Haussler, D.
Affiliations
Pennsylvania State University (US)
Venue
Proceedings of the National Academy of Sciences
Published
2003-09-19
Volume
100
Issue
20
Pages
11484-11489
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2122598328
Cited by
850
References
2
Citations by year
2026: 25 · 2025: 31 · 2024: 48 · 2023: 33 · 2022: 27 · 2021: 33 · 2020: 37 · 2019: 36 · 2018: 50 · 2017: 25 · 2016: 30 · 2015: 37 · 2014: 38 · 2013: 33 · 2012: 36
FWCI
18.70
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Human Genome Research Institute (HG 02238, P41HG002371, R01HG002238)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genome Rearrangement Algorithms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
genomic duplication, genomic deletions, chromosomal rearrangements, inversion, transposition, synteny, pseudogenes, gene loss
MeSH terms
Animals, Genome, Gene Deletion, Evolution, Molecular, Gene Duplication, Mice

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