Publications

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the insect chemoreceptor superfamily in drosophila pseudoobscura: molecular evolution of ecologically-relevant genes over 25 million years.the insect chemoreceptor superfamily, consisting of the odorant receptor (or) and gustatory receptor (gr) families, exhibits patterns of evolution ranging from highly conserved proteins to lineage-specific gene subfamily expansions when compared across insect suborders and orders. here their evolution across the timespan of 25 million years is examined which yield orthologous divergences ranging from 5-50%. they also reveal the beginnings of lineage-specific gene subfamilies as multiple duplicat ...019613461
comparative genome sequencing of drosophila pseudoobscura: chromosomal, gene, and cis-element evolution.we have sequenced the genome of a second drosophila species, drosophila pseudoobscura, and compared this to the genome sequence of drosophila melanogaster, a primary model organism. throughout evolution the vast majority of drosophila genes have remained on the same chromosome arm, but within each arm gene order has been extensively reshuffled, leading to a minimum of 921 syntenic blocks shared between the species. a repetitive sequence is found in the d. pseudoobscura genome at many junctions b ...015632085
molecular evolution of drosophila cdc6, an essential dna replication-licensing gene, suggests an adaptive choice of replication origins.increased size of eukaryotic genomes necessitated the use of multiple origins of dna replication, and presumably selected for their efficient spacing to ensure rapid dna replication. the sequence of these origins remains undetermined in metazoan genomes, leaving important questions about the selective constraints acting on replication origins unanswered. we have chosen to study the evolution of proteins that recognize and define these origins every cell cycle, as a surrogate to the direct analys ...018618020
rôle of the autosomes in the drosophila pseudoobscura hybrids. 193316577590
on the sterility of the interracial hybrids in drosophila pseudoobscura. 193316577530
further data on material effects in drosophila pseudoöbscura hybrids. 193516577691
salivary gland chromosomes in the two races of drosophila pseudoobscura. 193517246768
the y chromosome of drosophila pseudoobscura. 193517246766
maternal effect as a cause of the difference between the reciprocal crosses in drosophila pseudoöbscura. 193516587996
identification of the salivary gland chromosomes in drosophila pseudoobscura. 193516587958
studies on hybrid sterility iv. transplanted testes in drosophila pseudoobscura. 193617246823
genetic maps of the autosomes in drosophila pseudoobscura. 193617246820
geographical distribution and cytology of "sex ratio" in drosophila pseudoobscura and related species. 193617246805
inversions in the third chromosome of wild races of drosophila pseudoobscura, and their use in the study of the history of the species. 193616577723
studies on hybrid sterility. ii. localization of sterility factors in drosophila pseudoobscura hybrids. 193617246786
linkage groups in drosophila pseudoobscura, race b. 193717246865
an effect of the y-chromosome on the sex-ratio of interracial hybrids of drosophila pseudoöbscura. 193716588164
compressed deficiency and the location of the spindle attachment in the x-chromosome of drosophila pseudoöbscura. 193716588162
further data on the variation of the y chromosome in drosophila pseudoobscura. 193717246845
crossing over in the sex chromosome of racial hybrids of drosophila pseudoobscura. 193717246837
genetics of natural populations. ii. genic variation in populations of drosophila pseudoobscura inhabiting isolated mountain ranges. 193817246895
genetics of natural populations. i. chromosome variation in populations of drosophila pseudoobscura inhabiting isolated mountain ranges. 193817246883
inversions in the chromosomes of drosophila pseudoobscura. 193817246876
the homology of the eye color genes in drosophila melanogaster and drosophila pseudoobscura as determined by transplantation. ii. 193817246882
microgeographic variation in drosophila pseudoöbscura. 193916577905
genetics of natural populations. iv. mexican and guatemalan populations of drosophila pseudoobscura. 193917246930
dominance modifiers of scute in drosophila pseudoobscura. 193917246923
genetics of natural populations. iii gene arrangements in populations of drosophila pseudoobscura from contiguous localities. 193917246909
two x-ray induced mosaics in drosophila pseudoöbscura. 194016577959
intersexes in drosophila pseudoöbscura. 194116588503
female sterility in interracial hybrids of drosophila pseudoöbscura. 194116578014
genetics of natural populations. v. relations between mutation rate and accumulation of lethals in populations of drosophila pseudoobscura. 194117246997
a comparison of x-ray induced and naturally occurring chromosomal variations in drosophila pseudoobscura. 194117246993
genetics of natural populations. viii. concealed variability in the second and the fourth chromosomes of drosophila pseudoobscura and its bearing on the problem of heterosis. 194217247053
genetics of natural populations. vii. the allelism of lethals in the third chromosome of drosophila pseudoobscura. 194217247048
temperature and "sex-ratio" in drosophila pseudoöbscura. 194216588521
genetics of natural populations. x. dispersion rates in drosophila pseudoobscura. 194317247091
high mutation frequency in drosophila pseudoöbscura, race b. 194316588609
genetics of natural populations ix. temporal changes in the composition of populations of drosophila pseudoobscura. 194317247077
genetics of natural populations. xi. manifestation of genetic variants in drosophila pseudoobscura in different environments. 194417247121
experiments on sexual isolation in drosophila: v. the effect of varying proportions of drosophila pseudoobscura and drosophilia persimilis on the frequency of insemination in mixed populations. 194516578166
experiments on sexual isolation in drosophila: iv. modification of the degree of isolation between drosophila pseudoobscura and drosophila persimilis and sexual preferences in drosophila prosoltans. 194516588688
genetics of sexual isolation between drosophila pseudoobscura and drosophila persimilis. 194617247220
experiments on sexual isolation in drosophila: viii. influence of light on the mating behavior of drosophila subobscura, drosophila persimilis and drosophila pseudoobscura. 194616578209
genetics of natural populations; recombination and variability in populations of drosophila pseudoobscura. 194620985721
experiments on sexual isolation in drosophila: vii. the nature of the isolating mechanisms between drosophila pseudoobscura and drosophila persimilis. 194616588725
genetics of natural populations; experimental reproduction of some of the changes caused by natural selection in certain populations of drosophila pseudoobscura. 194621021044
experiments on sexual isolation in drosophila: vi. isolation between drosophila pseudoobscura and drosophila persimilis and their hybrids. 194616578193
influence of humidity on the survival of different chromosomal types in drosophila pseudoobscura. 194716588745
genetics of natural populations; rate of diffusion of a mutant gene through a population of drosophila pseudoobscura. 194720244463
genetics of natural populations; a response of certain gene arrangements in the third chromosome of drosophila pseudoobscura to natural selection. 194720292738
genetics of natural populations; experiments on chromosomes of drosophila pseudoobscura from different geographic regions. 194818100290
genetics of natural populations; proof of operation of natural selection in wild populations of drosophila pseudoobscura. 194818100287
studies on sex-ratio in drosophila pseudoobscura; selection and sex-ratio. 194818884662
observations on the mating behavior of drosophila pseudoobscura and d. persimilis. 194818884172
adaptive properties of carriers of certain gene arrangements in drosophila pseudoobscura. 194818863985
the suppression of crossing over in inversion heterozygotes of drosophila pseudoobscura. 194816588794
genetics of natural populations. xix. origin of heterosis through natural selection in populations of drosophila pseudoobscura. 195015414931
experiments on sexual isolation in drosophila: x. reproductive isolation between drosophila pseudoobscura and drosophila persimilis under natural and under laboratory conditions. 195116589029
morphological differences between two sibling species; drosophila pseudoobscura and drosophila persimilis. 195114808171
viability of hybrids between local populations of drosophila pseudoobscura. 195316589231
rates of spontaneous mutation in the second chromosomes of the sibling species, drosophila pseudoobscura and drosophila persimilis. 195417247527
the genotypic control of crossing over in drosophila pseudoobscura. 195417247512
environmental modification of heterosis in drosophila pseudoobscura. 195416589496
heterosis and the integration of the genotype in geographic populations of drosophila pseudoobscura. 195417247469
frequencies of inversion combinations in the third chromosome of wild males of drosophila pseudoobscura. 195516589771
genotypic background and heterosis in drosophila pseudoobscura. 195517247594
genetics of natural populations. xxiv. developmental homeostasis in natural populations of drosophila pseudoobscura. 195517247591
genetics of natural populations. xxiii. biological role of deleterious recessives in populations of drosophila pseudoobscura. 195517247590
variable crossing over arising in different strains of drosophila pseudoobscura. 195517247560
the longevity of hybrids between local populations of drosophila pseudoobscura. 195713410487
release of genetic variability through recombination. i. drosophila pseudoobscura. 195817247800
selection for developmental rate in drosophila pseudoobscura. 195817247740
effect of environment upon the manifestation of heterosis and homeostasis in drosophila pseudoobscura. 195917247854
genetics of natural populations. xxix. is the genetic load in drosophila pseudoobscura a mutational or a balanced load? 196017247959
genetics of natural populations. xxviii. the magnitude of the genetic load in populations of drosophila pseudoobscura. 196017247958
effects of temperature on productivity and genetic variance of body size in populations of drosophila pseudoobscura. 196113775221
selection for geotaxis in monomorphic and polymorphic populations of drosophila pseudoobscura. 196216591004
selection and body size in drosophila pseudoobscura at different temperatures. 196213887953
genetic drift and natural selection in experimental populations of drosophila pseudoobscura. 196213886810
temperature sensitivity of chromosomal polymorphism in drosophila pseudoobscura. 196213996135
genetics of natural populations. xxxiv. adaptive norm, genetic load and genetic elite in drosophila pseudoobscura. 196314083044
comparative fitness of experimental populations of drosophila pseudoobscura. 196314080688
genetic studies of natural populations of drosophila: drosophila pseudoobscura, a large dominant population. 196313984396
sex-linked inheritance of a quantitative trait of drosophila pseudoobscura. 196317248170
genetic potential for an extra crossvein in drosophila pseudoobscura. 196317248168
genetics of natural populations. 32. inbreeding and the mutational and balanced genetic loads in natural populations of drosophila pseudoobscura. 196314028273
a comparison of purebred and crossbred selection schemes with two populations of drosophila pseudoobscura. 196317248144
effects of temperature and x-ray irradiation on intrinsic growth rate in populations of drosophila pseudoobscura. 196314058260
genetics of natural populations. xxxi. genetics of an isolated marginal population of drosophila pseudoobscura. 196314028271
genetic loads in irradiated experimental populations of drosophila pseudoobscura. 196414239789
lethal and semilethal chromosomes in irradiated experimental populations of drosophila pseudoobscura. 196414239788
inbreeding and viability in experimental populations of drosophila pseudoobscura. 196414231442
the capacity for increase in chromosomally polymorphic and monomorphic populations of drosophila pseudoobscura. 196414221018
mating speed control by gene arrangements in drosophila pseudoobscura homokaryotypes. 196414215621
genetic differentiation within laboratory populations of drosophila pseudoobscura. 19645849558
genetics of natural populations. xxxvi. epistatic interactions of the components of the genetic load in drosophila pseudoobscura. 19655863911
the genotypic control of mating speed and duration of copulation in drosophila pseudoobscura. 19655218343
experimental control over the evolution of fitness in laboratory populations of drosophila pseudoobscura. 196514326055
cytological basis of "sex ratio" in drosophila pseudoobscura.cytological investigations of both laboratory and wild "sex ratio" lines of drosophila pseudoobscura reveal that, contrary to earlier reports, no extra replication of the x chromosome occurs in primary spermatocytes. normal disjunction of the sex chromosomes at anaphase i leads to equal numbers of x-bearing and y-bearing secondary spermatocytes. in the latter, the y chromosome regularly shows a "degeneration" at second anaphase. the "sex ratio" effect can be explained in terms of regularly nonfu ...196514263775
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