The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
The evolutionary position of nematodes
Open accessAbstract
BACKGROUND: The complete genomes of three animals have been sequenced by global research efforts: a nematode worm (Caenorhabditis elegans), an insect (Drosophila melanogaster), and a vertebrate (Homo sapiens). Remarkably, their relationships have yet to be clarified. The confusion concerns the enigmatic position of nematodes. Traditionally, nematodes have occupied a basal position, in part because they lack a true body cavity. However, the leading hypothesis now joins nematodes with arthropods in a molting clade, Ecdysozoa, based on data from several genes. RESULTS: We tested the Ecdysozoa hypothesis with analyses of more than 100 nuclear protein alignments, under conditions that would expose biases, and found that it was not supported. Instead, we found significant support for the traditional hypothesis, Coelomata. Our result is robust to different rates of sequence change among genes and lineages, different numbers of taxa, and different species of nematodes. CONCLUSION: We conclude that insects (arthropods) are genetically and evolutionarily closer to humans than to nematode worms.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Molecular Evolution and Phylogenetics
Nei, M., & Kumar, S. (2000) · doi:10.1093/oso/9780195135848.001.0001 · Cited by 8,012
Multiple Comparisons of Log-Likelihoods with Applications to Phylogenetic Inference
Shimodaira, H., & Hasegawa, M. (1999) · Molecular Biology and Evolution · doi:10.1093/oxfordjournals.molbev.a026201 · Cited by 4,237
Evidence for a clade of nematodes, arthropods and other moulting animals
Aguinaldo, A. M. A., Turbeville, J. M., Linford, L. S., Rivera, M. C., Garey, J. R., Raff, R. A., & Lake, J. A. (1997) · Nature · doi:10.1038/387489a0 · Cited by 1,609
Peterson, K. J., & Eernisse, D. J. (2001) · Evolution & Development · doi:10.1046/j.1525-142x.2001.003003170.x · Cited by 529
The new animal phylogeny: Reliability and implications
Adoutte, A., Balavoine, G., Lartillot, N., Lespinet, O., Prud'homme, B., & de Rosa, R. (2000) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.97.9.4453 · Cited by 512
Wang, D. Y.-C., Kumar, S., & Hedges, S. B. (1999) · Proceedings of the Royal Society of London. Series B: Biological Sciences · doi:10.1098/rspb.1999.0617 · Cited by 493
Self-citationMushegian, A. R., Garey, J. R., Martin, J., & Liu, L. X. (1998) · Genome Research · doi:10.1101/gr.8.6.590 · Cited by 164
Cited by
Broad phylogenomic sampling improves resolution of the animal tree of life
Dunn, C. W., Hejnol, A., Matus, D. Q., Pang, K., Browne, W. E., Smith, S. A., Seaver, E., Rouse, G. W., Obst, M., Edgecombe, G. D., et al. (2008) · Nature · doi:10.1038/nature06614 · Cited by 1,921
Genome-scale approaches to resolving incongruence in molecular phylogenies.
Rokas, A., Williams, B. L., King, N., & Carroll, S. B. (2003) · Nature · doi:10.1038/nature02053 · Cited by 1,512
The origin and evolution of model organisms
Hedges, S. B. (2002) · Nature Reviews Genetics · doi:10.1038/nrg929 · Cited by 806
Self-citationLartillot, N., Brinkmann, H., & Philippe, H. (2007) · BMC Evolutionary Biology · doi:10.1186/1471-2148-7-s1-s4 · Cited by 705
Comparative Genome and Proteome Analysis of Anopheles gambiae and Drosophila melanogaster
Zdobnov, E. M., von Mering, C., Letunic, I., Torrents, D., Suyama, M., Copley, R. R., Christophides, G. K., Thomasova, D., Holt, R. A., Subramanian, G. M., et al. (2002) · Science · doi:10.1126/science.1077061 · Cited by 553
Metadata
- Authors
- Blair, J. E., Ikeo, K., Gojobori, T., & Hedges, S. B.
- Venue
- BMC Evolutionary Biology
- Published
- 2002-04-08
- Volume
- 2
- Issue
- 1
- Pages
- 7-7
- ISSN
- 1471-2148 (ISSN-L)
- OpenAlex
- W2121317739
- Cited by
- 218
- References
- 7
- FWCI
- 8.96
- Type
- journal article
- Language
- en
- Open access
- gold
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: The evolutionary position of nematodes. https://app.cochat.ai/papers/10.1186/1471-2148-2-7
- The paper
- Blair, J. E., Ikeo, K., Gojobori, T., & Hedges, S. B. (2002). The evolutionary position of nematodes. BMC Evolutionary Biology. https://doi.org/10.1186/1471-2148-2-7
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
