Evidence map›Paper›PMID 9286680›Full record

ArticleGenetics1997

Polymorphism and divergence at a Drosophila pseudogene locus.

J K Pritchard, S W Schaeffer

Open access · bronzeAbstract read
In one paragraph

Article in Genetics, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
4.2field-weighted citation impact, top 6% 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

11 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Origin of sphinx, a young chimeric RNA gene in Drosophila melanogaster.Proceedings of the National Academy of Sciences of the United States of America · 2002
    Article
  9. Article
  10. Article
  11. 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 at 1 institution in 1 country.

J K PritchardDepartment of Biology, Pennsylvania State University, University Park 16802, USA.
S W Schaeffer
Pennsylvania State University · US

Funding

POPULATION GENETICS THEORYR01GM028016 · NIGMS · STANFORD UNIVERSITY · PI FELDMAN, MARCUS W · 1985 to 2010
$2.5M
MOLECULAR POPULATION GENETICS OF ADH IN DROSPHILAR29GM042472 · NIGMS · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI SCHAEFFER, STEPHEN W · 1989 to 1993
–
NIGMS NIH HHS GM-28016NIGMS NIH HHS GM-42472
6 · The paper itself

Abstract

The larval cuticle protein (Lcp) cluster in Drosophila melanogaster contains four functional genes and a closely related pseudogene. A 630-bp fragment including the larval cuticle pseudogene locus (Lcp psi) was nucleotide sequenced in 10 strains of D. melanogaster and a 458-bp Lcp psi fragment from D. simulans was also sequenced. We used these data to test the hypotheses that the rates of synonymous and nonsynonymous substitution are equal, that the absolute levels of variation are higher than in functional genes, and that intraspecific polymorphism is correlated with interspecific divergence. As predicted, synonymous and nonsynonymous substitution rates were equivalent, and overall nucleotide divergence between D. melanogaster and D. simulans (Jukes-Cantor distance = 0.149 +/- 0.150) was extremely high. However, within-species DNA sequence comparisons at Lcp psi revealed lower levels of polymorphism (theta = 0.001 +/- 0.001) than at many functional loci in D. melanogaster. Using the HUDSON, KREITMAN, and AGUADE (HKA) test, we show that the level of polymorphism in Lcp psi within D. melanogaster is lower than expected given the amount of divergence between D. melanogaster and D. simulans when the pseudogene data are compared to the Adh 5' flanking region. Because the Lcp psi lies in a region of relatively infrequent recombination, we suggest that the low level of within-species polymorphism is the result of background selection.

Indexed as

Polymorphism, GeneticAnimalsBase SequenceDrosophila melanogasterGenes, InsectGenetic VariationInsect ProteinsMolecular Sequence DataPseudogenesSequence AlignmentSequence Analysis, DNASpecies SpecificityInsect Proteins

Identifiers

PMID9286680
PMCPMC1208104
OpenAlexW2136452282

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.