Evidence map›Paper›PMID 11333240›Full record

ArticleGenetics2001

Multiple and independent cessation of recombination between avian sex chromosomes.

H Ellegren, A Carmichael

Abstract read
In one paragraph

Article in Genetics, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
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

24 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Why chromosome palindromes?International journal of evolutionary biology · 2012
    Article
  12. Review
  13. Article
  14. A W-linked palindrome and gene conversion in New World sparrows and blackbirds.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2010
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Molecular divergence of the W chromosomes in pyralid moths (Lepidoptera).Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2007
    Article
  20. Article
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

2 authors.

H EllegrenDepartment of Evolutionary Biology, Uppsala University, Norbyvägen 18D, SE-752 36 SE-752 36 Uppsala, Sweden. hans.ellegren@ebc.uu.se
A Carmichael

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Birds are characterized by female heterogamety; females carry the Z and W sex chromosomes, while males have two copies of the Z chromosome. We suggest here that full differentiation of the Z and W sex chromosomes of birds did not take place until after the split of major contemporary lineages, in the late Cretaceous. The ATP synthase alpha-subunit gene is now present in one copy each on the nonrecombining part of the W chromosome (ATP5A1W) and on the Z chromosome (ATP5A1Z). This gene seems to have evolved on several independent occasions, in different lineages, from a state of free recombination into two sex-specific and nonrecombining variants. ATP5A1W and ATP5A1Z are thus more similar within orders, relative to what W (or Z) are between orders. Moreover, this cessation of recombination apparently took place at different times in different lineages (estimated at 13, 40, and 65 million years ago in Ciconiiformes, Galliformes, and Anseriformes, respectively). We argue that these observations are the result of recent and traceable steps in the process where sex chromosomes gradually cease to recombine and become differentiated. Our data demonstrate that this process, once initiated, may occur independently in parallel in sister lineages.

Indexed as

Recombination, GeneticSex ChromosomesAmino Acid SequenceAnimalsBase SequenceBirdsDNAExonsLikelihood FunctionsMolecular Sequence DataPhylogenySequence Homology, Nucleic AcidDNA

Identifiers

PMID11333240
PMCPMC1461649

What OpenQuestion holds

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Registered trials

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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.