Evidence map›Paper›PMID 16520459›Full record

ArticleGenome research2006

X chromosomes and autosomes evolve at similar rates in Drosophila: no evidence for faster-X protein evolution.

Kevin Thornton, Doris Bachtrog, Peter Andolfatto

Open access · bronzeAbstract read
In one paragraph

Article in Genome research, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing 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

39 citing papers in PubMed, 72 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Evidence for Faster X Chromosome Evolution in Spiders.Molecular biology and evolution · 2019
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Faster-X effects in two Drosophila lineages.Genome biology and evolution · 2014
    Article
  14. Positive selection drives faster-Z evolution in silkmoths.Evolution; international journal of organic evolution · 2014
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. 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

3 authors at 2 institutions in 1 country.

Kevin ThorntonDepartment of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853, USA. kt234@cornell.edu
Doris Bachtrog
Peter Andolfatto
University of California San Diego · USCornell University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent data from Drosophila suggest that a substantial fraction of amino acid substitutions observed between species are beneficial. If these beneficial mutations are on average partially recessive, then the rate of protein evolution is predicted to be faster for X-linked genes compared to autosomal genes (the "faster-X" hypothesis). We test this prediction by comparing rates of protein substitutions between orthologous genes, taking advantage of variations in chromosome fusions within the genus Drosophila. In members of the Drosophila melanogaster species group, the chromosomal arm 3L segregates as an ordinary autosome (i.e., two homologous copies in both males and females). However, in the Drosophila pseudoobscura species group, this chromosomal arm has become fused to the ancestral X chromosome and is hemizygous in males. The faster-X hypothesis predicts that protein evolution should be faster for genes on this chromosomal arm in the D. pseudoobscura lineage, relative to the D. melanogaster lineage. Here we combine new sequence data for 202 gene fragments in Drosophila miranda (in the pseudoobscura species group) with the completed genomes of D. melanogaster, D. pseudoobscura, and Drosophila yakuba to show that there are no detectable differences in rates of amino acid evolution for orthologous X-linked and autosomal genes. Our results imply that the contribution of the faster-X (if any) to the large-X effect on reproductive isolation in Drosophila is not due to a generally faster rate of protein evolution. The lack of a detectable faster-X effect in these species suggests either that beneficial amino acids are not partially recessive on average, or that adaptive evolution does not often use newly arising amino acid mutations.

Indexed as

Evolution, MolecularAmino Acid SubstitutionAnimalsBase SequenceDrosophilaDrosophila ProteinsFemaleGenes, InsectMaleMolecular Sequence DataSpecies SpecificityX ChromosomeDrosophila Proteins

Identifiers

PMID16520459
PMCPMC1457026
OpenAlexW2140603917

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.