Evidence map›Paper›PMID 11337473›Full record

ArticleGenome research2001

Ancient genome duplications did not structure the human Hox-bearing chromosomes.

A L Hughes, J da Silva, R Friedman

Open access · bronzeAbstract read
In one paragraph

Article in Genome research, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing 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

37 citing papers in PubMed, 120 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Hox genes and evolution.F1000Research · 2016
    Review
  5. Review
  6. Statistics and truth in phylogenomics.Molecular biology and evolution · 2012
    Review
  7. Article
  8. Article
  9. Review
  10. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

A L HughesDepartment of Biological Sciences, University of South Carolina, Columbia 29208, USA. austin@biol.sc.edu
J da Silva
R Friedman
University of South Carolina · US

Funding

NIGMS NIH HHS GM34940
6 · The paper itself

Abstract

The fact that there are four homeobox (Hox) clusters in most vertebrates but only one in invertebrates is often cited as evidence for the hypothesis that two rounds of genome duplication by polyploidization occurred early in vertebrate history. In addition, it has been observed in humans and other mammals that numerous gene families include paralogs on two or more of the four Hox-bearing chromosomes (the chromosomes bearing the Hox clusters; i.e., human chromosomes 2, 7, 12, and 17), and the existence of these paralogs has been taken as evidence that these genes were duplicated along with the Hox clusters by polyploidization. We tested this hypothesis by phylogenetic analysis of 42 gene families including members on two or more of the human Hox-bearing chromosomes. In 32 of these families there was evidence against the hypothesis that gene duplication occurred simultaneously with duplication of the Hox clusters. Phylogenies of 14 families supported the occurrence of one or more gene duplications before the origin of vertebrates, and of 15 gene duplication times estimated for gene families evolving in a clock-like manner, only six were dated to the same time period early in vertebrate history during which the Hox clusters duplicated. Furthermore, of gene families duplicated around the same time as the Hox clusters, the majority showed topologies inconsistent with their having duplicated simultaneously with the Hox clusters. The results thus indicate that ancient events of genome duplication, if they occurred at all, did not play an important role in structuring the mammalian Hox-bearing chromosomes.

Indexed as

Evolution, MolecularGene DuplicationGenomeAnimalsChromosomes, HumanGenes, HomeoboxHumansMultigene FamilyPhylogenyTime

Identifiers

PMID11337473
PMCPMC311105
OpenAlexW2104152293

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.