Evidence map›Paper›PMID 21725690›Full record

ArticleChromosoma2011

Strong conservation of the bird Z chromosome in reptilian genomes is revealed by comparative painting despite 275 million years divergence.

Martina Pokorná, Massimo Giovannotti, Lukáš Kratochvíl, Fumio Kasai, Vladimir A Trifonov, Patricia C M O'Brien, Vincenzo Caputo, Ettore Olmo, Malcolm A Ferguson-Smith, Willem Rens

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Chromosoma, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
6.6field-weighted citation impact, top 3% 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

48 citing papers in PubMed, 92 citations in OpenAlex.

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  4. bioRxiv : the preprint server for biology · 2024
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  9. Do sex chromosomes of snakes, monitor lizards, and iguanian lizards result from multiple fission of an "ancestral amniote super-sex chromosome"?Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2020
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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

10 authors at 5 institutions in 4 countries.

Martina PokornáCharles University in Prague, Czech Republic.
Massimo Giovannotti
Lukáš Kratochvíl
Fumio Kasai
Vladimir A Trifonov
Patricia C M O'Brien
Vincenzo Caputo
Ettore Olmo
Malcolm A Ferguson-Smith
Willem Rens
University of Cambridge · GBMarche Polytechnic University · ITCharles University · CZCzech Academy of Sciences · CZSiberian Branch of the Russian Academy of Sciences · RU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The divergence of lineages leading to extant squamate reptiles (lizards, snakes, and amphisbaenians) and birds occurred about 275 million years ago. Birds, unlike squamates, have karyotypes that are typified by the presence of a number of very small chromosomes. Hence, a number of chromosome rearrangements might be expected between bird and squamate genomes. We used chromosome-specific DNA from flow-sorted chicken (Gallus gallus) Z sex chromosomes as a probe in cross-species hybridization to metaphase spreads of 28 species from 17 families representing most main squamate lineages and single species of crocodiles and turtles. In all but one case, the Z chromosome was conserved intact despite very ancient divergence of sauropsid lineages. Furthermore, the probe painted an autosomal region in seven species from our sample with characterized sex chromosomes, and this provides evidence against an ancestral avian-like system of sex determination in Squamata. The avian Z chromosome synteny is, therefore, conserved albeit it is not a sex chromosome in these squamate species.

Indexed as

Evolution, MolecularGenomeAnimalsBirdsChromosome PaintingFemaleKaryotypeMalePhylogenyReptilesSex Chromosomes

Identifiers

PMID21725690
OpenAlexW1983161375

What OpenQuestion holds

Textmetadata
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.