Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 374

The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.

Caenorhabditis phylogeny predicts convergence of hermaphroditism and extensive intron loss

Open access
Kiontke, Karin, Gavin, Nicholas P., Raynes, Yevgeniy, Roehrig, Casey, Piano, Fabio, Fitch, David H. A.·2004·Proceedings of the National Academy of Sciences

Abstract

Despite the prominence of Caenorhabditis elegans as a major developmental and genetic model system, its phylogenetic relationship to its closest relatives has not been resolved. Resolution of these relationships is necessary for studying the steps that underlie life history, genomic, and morphological evolution of this important system. By using data from five different nuclear genes from 10 Caenorhabditis species currently in culture, we find a well resolved phylogeny that reveals three striking patterns in the evolution of this animal group: ( i ) Hermaphroditism has evolved independently in C. elegans and its close relative Caenorhabditis briggsae ; ( ii ) there is a large degree of intron turnover within Caenorhabditis , and intron losses are much more frequent than intron gains; and ( iii ) despite the lack of marked morphological diversity, more genetic disparity is present within this one genus than has occurred within all vertebrates.

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.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.0403094101

Cites

5 of 5 references verified0 citation errors · 0 not checkable

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.

A few free checks a day · papers already verified open instantly · results are public

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

Show all 5 references

Cited by

See all 374

Metadata

Authors
Kiontke, K., Gavin, N. P., Raynes, Y., Roehrig, C., Piano, F., & Fitch, D. H. A.
Venue
Proceedings of the National Academy of Sciences
Published
2004-06-07
Volume
101
Issue
24
Pages
9003-9008
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2015202087
Cited by
374
References
5
FWCI
10.82
Type
journal article
Language
en
Open access
green

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: Caenorhabditis phylogeny predicts convergence of hermaphroditism and extensive intron loss. https://app.cochat.ai/papers/10.1073/pnas.0403094101
The paper
Kiontke, K., Gavin, N. P., Raynes, Y., Roehrig, C., Piano, F., & Fitch, D. H. A. (2004). Caenorhabditis phylogeny predicts convergence of hermaphroditism and extensive intron loss. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0403094101

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.