Evidence map›Paper›PMID 25504727›Full record

ArticleScience (New York, N.Y.)2014

Complex evolutionary trajectories of sex chromosomes across bird taxa.

Qi Zhou, Jilin Zhang, Doris Bachtrog, Na An, Quanfei Huang, Erich D Jarvis, M Thomas P Gilbert, Guojie Zhang

Open access · greenAbstract read
In one paragraph

Article in Science (New York, N.Y.), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 180 papers.

0numbers the graph read from it
0cells of the map it votes in
180citing papers in PubMed
16.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

180 citing papers in PubMed, 330 citations in OpenAlex.

  1. Satellite DNA evolution in Tytonidae (Aves: Strigiformes): dynamic repeat landscapes despite conserved karyotypes.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2026
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  18. Genomic origins and evolution of neo-sex chromosomes in Pacific Island birds.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  19. Article
  20. Sharks and rays have the oldest vertebrate sex chromosome with unique sex determination mechanisms.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article

120 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 3 countries.

Qi ZhouDepartment of Integrative Biology, University of California, Berkeley, CA94720, USA. zhouqi@berkeley.edu zhanggj@genomics.org.cn.
Jilin ZhangChina National Genebank, BGI-Shenzhen, Shenzhen, 518083. China.
Doris BachtrogDepartment of Integrative Biology, University of California, Berkeley, CA94720, USA.
Na AnChina National Genebank, BGI-Shenzhen, Shenzhen, 518083. China.
Quanfei HuangChina National Genebank, BGI-Shenzhen, Shenzhen, 518083. China.
Erich D JarvisDepartment of Neurobiology, Howard Hughes Medical Institute, Duke University Medical Center, Durham, NC 27710, USA.
M Thomas P GilbertCentre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350 Copenhagen, Denmark. Trace and Environmental DNA laboratory, Department of Environment and Agriculture, Curtin University, Perth, Western Australia 6102, Australia.
Guojie ZhangChina National Genebank, BGI-Shenzhen, Shenzhen, 518083. China. Centre for Social Evolution, Department of Biology, Universitetsparken 15, University of Copenhagen, DK-2100 Copenhagen, Denmark. zhouqi@berkeley.edu zhanggj@genomics.org.cn.
University of Copenhagen · DKHoward Hughes Medical Institute · US

Funding

The formation of Heterochromatin on evolving Y chromosomesR01GM101255 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI Doris Bachtrog · 2015 to 2026
$4.9M
The evolution of dosage compensation in DrosophilaR01GM076007 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI BACHTROG, DORIS · 2006 to 2020
$3.6M
"Gene Trafficking on an Evolving X Chromosome in Drosophila"R01GM093182 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI BACHTROG, DORIS · 2010 to 2017
$2.7M
Howard Hughes Medical InstituteNIGMS NIH HHS GM076007NIGMS NIH HHS GM093182NIGMS NIH HHS R01 GM076007NIGMS NIH HHS R01 GM093182NIGMS NIH HHS R01 GM101255
6 · The paper itself

Abstract

Sex-specific chromosomes, like the W of most female birds and the Y of male mammals, usually have lost most genes owing to a lack of recombination. We analyze newly available genomes of 17 bird species representing the avian phylogenetic range, and find that more than half of them do not have as fully degenerated W chromosomes as that of chicken. We show that avian sex chromosomes harbor tremendous diversity among species in their composition of pseudoautosomal regions and degree of Z/W differentiation. Punctuated events of shared or lineage-specific recombination suppression have produced a gradient of "evolutionary strata" along the Z chromosome, which initiates from the putative avian sex-determining gene DMRT1 and ends at the pseudoautosomal region. W-linked genes are subject to ongoing functional decay after recombination was suppressed, and the tempo of degeneration slows down in older strata. Overall, we unveil a complex history of avian sex chromosome evolution.

Indexed as

Biological EvolutionEvolution, MolecularAnimalsAvian ProteinsBirdsChickensChromosome InversionChromosome MappingFemaleMalePhylogenyRecombination, GeneticSex ChromosomesSpecies SpecificityStruthioniformesSyntenyAvian ProteinsDMRT1 proteinTranscription Factors

Identifiers

PMID25504727
PMCPMC6445272
OpenAlexW2020452253

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.