2005
A cryptic taxon of Galpagos tortoise in conservation peril
Russello M, Glaberman S, Gibbs J, Marquez C, Powell J, Caccone A. A cryptic taxon of Galpagos tortoise in conservation peril. Biology Letters 2005, 1: 287-290. PMID: 17148189, PMCID: PMC1617146, DOI: 10.1098/rsbl.2005.0317.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsDNAExtinction, BiologicalGenetic MarkersGenetic VariationGenetics, PopulationPhylogenySpecies SpecificityTurtlesConceptsBiological diversityFormal taxonomic designationGenetic divergenceGalápagos tortoisesAccurate taxonomyDistinct lineagesTaxonomic investigationGenetic divisionTaxonomic designationsSingle taxonGiant tortoisesBad taxonomyEvolutionary heritageNew taxonTaxaAccessible islandsTortoisesHuman intellectual historyDiversityConservationSanta CruzTaxonomyLineagesGalápagosOrganisms
2002
Speciation Within Anopheles gambiae-- the Glass Is Half Full
della Torre A, Costantini C, Besansky N, Caccone A, Petrarca V, Powell J, Coluzzi M. Speciation Within Anopheles gambiae-- the Glass Is Half Full. Science 2002, 298: 115-117. PMID: 12364784, DOI: 10.1126/science.1078170.Peer-Reviewed Original ResearchMeSH KeywordsAdaptation, PhysiologicalAfrica South of the SaharaAllelesAnimalsAnophelesBiological EvolutionChromosome InversionChromosomesDNA, RibosomalEcosystemEnvironmentFeeding BehaviorGenetic VariationGenetics, PopulationGenomeHuman ActivitiesHumansInsect Bites and StingsInsect VectorsMalariaMicrosatellite RepeatsReproductionSequence Analysis, DNA
1994
Molecular techniques in population genetics: A brief history
Powell J. Molecular techniques in population genetics: A brief history. EXS 1994, 69: 131-156. PMID: 7994104, DOI: 10.1007/978-3-0348-7527-1_8.Peer-Reviewed Original Research
1977
MICROGEOGRAPHIC DIFFERENTIATION OF CHROMOSOMAL AND ENZYME POLYMORPHISMS IN DROSOPHILA PERSIMILIS
Taylor C, Powell J. MICROGEOGRAPHIC DIFFERENTIATION OF CHROMOSOMAL AND ENZYME POLYMORPHISMS IN DROSOPHILA PERSIMILIS. Genetics 1977, 85: 681-695. PMID: 863240, PMCID: PMC1213650, DOI: 10.1093/genetics/85.4.681.Peer-Reviewed Original ResearchConceptsDrosophila persimilisEnzyme polymorphismsTemporal genetic differentiationRandom genetic driftGenetic differentiationNatural populationsGenetic driftChromosome inversionsHabitat preferencesAllozyme frequenciesMicrogeographic differentiationDispersal behaviourSelection coefficientsModel of selectionInversion frequenciesPersimilisDifferentiationHeterogeneous environmentsBehavioral differencesPolymorphismSpeciesGenotypesShort distances
1976
GENETICS OF NATURAL POPULATIONS. XLIII. FURTHER STUDIES ON RATES OF DISPERSAL OF DROSOPHILA PSEUDOOBSCURA AND ITS RELATIVES
Powell J, Dobzhansky T, Hook J, Wistrand H. GENETICS OF NATURAL POPULATIONS. XLIII. FURTHER STUDIES ON RATES OF DISPERSAL OF DROSOPHILA PSEUDOOBSCURA AND ITS RELATIVES. Genetics 1976, 82: 493-506. PMID: 1269906, PMCID: PMC1213470, DOI: 10.1093/genetics/82.3.493.Peer-Reviewed Original ResearchConceptsDrosophila pseudoobscuraRate of dispersalD. persimilisD. mirandaGene flowDispersal capacityNatural populationsD. aztecaDispersal ratesRelease pointPseudoobscuraSpeciesFluorescent dustLocal populationBaitGenetic implicationsDispersalPersimilisGeneticsFliesMirandaAztecaRecapturePopulationPopulation sample
1975
Population Genetics of Mexican Drosophila: I. Chromosomal variation in natural populations of Drosophila pseudoobscura from Central Mexico
DOBZHANSKY T, FELIX R, GUZMÁN J, LEVINE L, OLVERA O, POWELL J, DE LA ROSA M, SALCEDA V. Population Genetics of Mexican Drosophila: I. Chromosomal variation in natural populations of Drosophila pseudoobscura from Central Mexico. Journal Of Heredity 1975, 66: 203-206. PMID: 1165399, DOI: 10.1093/oxfordjournals.jhered.a108613.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsChromosome MappingChromosomesDrosophilaGenetics, PopulationKaryotypingMexicoPolymorphism, GeneticConceptsDrosophila pseudoobscura populationsCentral MexicoGene arrangementDrosophila pseudoobscuraThird chromosomeEvolutionary historyNatural populationsChromosomal variationPhylogenetic treePopulation geneticsSpecies areaSanta CruzPhyladSpeciesPseudoobscuraDrosophilaChromosomesGeneticsMexicoNorthern partPopulationCruzTrees
1974
Interaction of genetic loci: the effect of linkage disequilibria on hardy-weinberg expectations
Powell J. Interaction of genetic loci: the effect of linkage disequilibria on hardy-weinberg expectations. Heredity 1974, 32: 151-158. PMID: 4526038, DOI: 10.1038/hdy.1974.18.Peer-Reviewed Original Research
1972
Enzyme variability in the Drosophila willistoni Group. V. Genic variation in natural populations of Drosophila equinoxialis*
Ayala F, Powell J, Tracey M. Enzyme variability in the Drosophila willistoni Group. V. Genic variation in natural populations of Drosophila equinoxialis*. Genetics Research 1972, 20: 19-42. PMID: 5084410, DOI: 10.1017/s0016672300013562.Peer-Reviewed Original ResearchMeSH KeywordsAllelesAnimalsDrosophilaElectrophoresis, Starch GelGene FrequencyGenetic VariationGenetics, PopulationHeterozygotePolymorphism, GeneticConceptsGenetic variationD. equinoxialisNatural populationsAllelic variationDrosophila willistoni groupMdh-2 locusStarch gel electrophoresisGenic variationD. willistoniWillistoni groupNeotropical speciesNatural selectionGenetic variabilityEnzyme variabilityEst-3LociSpeciesGene frequenciesSame alleleCommon allelesAllelesAllelic frequenciesLocalitiesWillistoniGenesAllozymes as Diagnostic Characters of Sibling Species of Drosophila
Ayala F, Powell J. Allozymes as Diagnostic Characters of Sibling Species of Drosophila. Proceedings Of The National Academy Of Sciences Of The United States Of America 1972, 69: 1094-1096. PMID: 4504321, PMCID: PMC426637, DOI: 10.1073/pnas.69.5.1094.Peer-Reviewed Original ResearchMeSH KeywordsAcid PhosphataseAdenine NucleotidesAlkaline PhosphataseAllelesAnimalsDrosophilaEsterasesGene FrequencyGenetic VariationGenetics, PopulationGenotypeGlyceraldehyde-3-Phosphate DehydrogenasesHexokinaseLeucyl AminopeptidaseMalate DehydrogenasePhosphoglucomutasePhosphotransferasesSpecies Specificity