| genetics of natural populations. xxiii. biological role of deleterious recessives in populations of drosophila pseudoobscura. | | 1955 | 17247590 |
| variable crossing over arising in different strains of drosophila pseudoobscura. | | 1955 | 17247560 |
| rates of spontaneous mutation in the second chromosomes of the sibling species, drosophila pseudoobscura and drosophila persimilis. | | 1954 | 17247527 |
| the genotypic control of crossing over in drosophila pseudoobscura. | | 1954 | 17247512 |
| environmental modification of heterosis in drosophila pseudoobscura. | | 1954 | 16589496 |
| heterosis and the integration of the genotype in geographic populations of drosophila pseudoobscura. | | 1954 | 17247469 |
| viability of hybrids between local populations of drosophila pseudoobscura. | | 1953 | 16589231 |
| experiments on sexual isolation in drosophila: x. reproductive isolation between drosophila pseudoobscura and drosophila persimilis under natural and under laboratory conditions. | | 1951 | 16589029 |
| morphological differences between two sibling species; drosophila pseudoobscura and drosophila persimilis. | | 1951 | 14808171 |
| genetics of natural populations. xix. origin of heterosis through natural selection in populations of drosophila pseudoobscura. | | 1950 | 15414931 |
| genetics of natural populations; experiments on chromosomes of drosophila pseudoobscura from different geographic regions. | | 1948 | 18100290 |
| genetics of natural populations; proof of operation of natural selection in wild populations of drosophila pseudoobscura. | | 1948 | 18100287 |
| studies on sex-ratio in drosophila pseudoobscura; selection and sex-ratio. | | 1948 | 18884662 |
| observations on the mating behavior of drosophila pseudoobscura and d. persimilis. | | 1948 | 18884172 |
| adaptive properties of carriers of certain gene arrangements in drosophila pseudoobscura. | | 1948 | 18863985 |
| the suppression of crossing over in inversion heterozygotes of drosophila pseudoobscura. | | 1948 | 16588794 |
| influence of humidity on the survival of different chromosomal types in drosophila pseudoobscura. | | 1947 | 16588745 |
| genetics of natural populations; rate of diffusion of a mutant gene through a population of drosophila pseudoobscura. | | 1947 | 20244463 |
| genetics of natural populations; a response of certain gene arrangements in the third chromosome of drosophila pseudoobscura to natural selection. | | 1947 | 20292738 |
| effectiveness of intraspecific and interspecific matings in drosophila pseudoobscura and drosophila persimilis. | | 2015 | 20286615 |
| genetics of sexual isolation between drosophila pseudoobscura and drosophila persimilis. | | 1946 | 17247220 |
| experiments on sexual isolation in drosophila: viii. influence of light on the mating behavior of drosophila subobscura, drosophila persimilis and drosophila pseudoobscura. | | 1946 | 16578209 |
| genetics of natural populations; recombination and variability in populations of drosophila pseudoobscura. | | 1946 | 20985721 |
| experiments on sexual isolation in drosophila: vii. the nature of the isolating mechanisms between drosophila pseudoobscura and drosophila persimilis. | | 1946 | 16588725 |
| genetics of natural populations; experimental reproduction of some of the changes caused by natural selection in certain populations of drosophila pseudoobscura. | | 1946 | 21021044 |
| experiments on sexual isolation in drosophila: vi. isolation between drosophila pseudoobscura and drosophila persimilis and their hybrids. | | 1946 | 16578193 |
| 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. | | 1945 | 16578166 |
| 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. | | 1945 | 16588688 |
| genetics of natural populations. xi. manifestation of genetic variants in drosophila pseudoobscura in different environments. | | 1944 | 17247121 |
| genetics of natural populations. x. dispersion rates in drosophila pseudoobscura. | | 1943 | 17247091 |
| high mutation frequency in drosophila pseudoöbscura, race b. | | 1943 | 16588609 |
| genetics of natural populations ix. temporal changes in the composition of populations of drosophila pseudoobscura. | | 1943 | 17247077 |
| 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. | | 1942 | 17247053 |
| genetics of natural populations. vii. the allelism of lethals in the third chromosome of drosophila pseudoobscura. | | 1942 | 17247048 |
| temperature and "sex-ratio" in drosophila pseudoöbscura. | | 1942 | 16588521 |
| intersexes in drosophila pseudoöbscura. | | 1941 | 16588503 |
| female sterility in interracial hybrids of drosophila pseudoöbscura. | | 1941 | 16578014 |
| genetics of natural populations. v. relations between mutation rate and accumulation of lethals in populations of drosophila pseudoobscura. | | 1941 | 17246997 |
| a comparison of x-ray induced and naturally occurring chromosomal variations in drosophila pseudoobscura. | | 1941 | 17246993 |
| two x-ray induced mosaics in drosophila pseudoöbscura. | | 1940 | 16577959 |
| microgeographic variation in drosophila pseudoöbscura. | | 1939 | 16577905 |
| genetics of natural populations. iv. mexican and guatemalan populations of drosophila pseudoobscura. | | 1939 | 17246930 |
| dominance modifiers of scute in drosophila pseudoobscura. | | 1939 | 17246923 |
| genetics of natural populations. iii gene arrangements in populations of drosophila pseudoobscura from contiguous localities. | | 1939 | 17246909 |
| genetics of natural populations. ii. genic variation in populations of drosophila pseudoobscura inhabiting isolated mountain ranges. | | 1938 | 17246895 |
| genetics of natural populations. i. chromosome variation in populations of drosophila pseudoobscura inhabiting isolated mountain ranges. | | 1938 | 17246883 |
| inversions in the chromosomes of drosophila pseudoobscura. | | 1938 | 17246876 |
| linkage groups in drosophila pseudoobscura, race b. | | 1937 | 17246865 |
| an effect of the y-chromosome on the sex-ratio of interracial hybrids of drosophila pseudoöbscura. | | 1937 | 16588164 |
| compressed deficiency and the location of the spindle attachment in the x-chromosome of drosophila pseudoöbscura. | | 1937 | 16588162 |
| further data on the variation of the y chromosome in drosophila pseudoobscura. | | 1937 | 17246845 |
| crossing over in the sex chromosome of racial hybrids of drosophila pseudoobscura. | | 1937 | 17246837 |
| studies on hybrid sterility iv. transplanted testes in drosophila pseudoobscura. | | 1936 | 17246823 |
| genetic maps of the autosomes in drosophila pseudoobscura. | | 1936 | 17246820 |
| geographical distribution and cytology of "sex ratio" in drosophila pseudoobscura and related species. | | 1936 | 17246805 |
| inversions in the third chromosome of wild races of drosophila pseudoobscura, and their use in the study of the history of the species. | | 1936 | 16577723 |
| studies on hybrid sterility. ii. localization of sterility factors in drosophila pseudoobscura hybrids. | | 1936 | 17246786 |
| further data on material effects in drosophila pseudoöbscura hybrids. | | 1935 | 16577691 |
| salivary gland chromosomes in the two races of drosophila pseudoobscura. | | 1935 | 17246768 |
| the y chromosome of drosophila pseudoobscura. | | 1935 | 17246766 |
| maternal effect as a cause of the difference between the reciprocal crosses in drosophila pseudoöbscura. | | 1935 | 16587996 |
| identification of the salivary gland chromosomes in drosophila pseudoobscura. | | 1935 | 16587958 |
| rôle of the autosomes in the drosophila pseudoobscura hybrids. | | 1933 | 16577590 |
| on the sterility of the interracial hybrids in drosophila pseudoobscura. | | 1933 | 16577530 |
| the role of species-specific sensory cues in male responses to mating rivals in drosophila melanogaster fruitflies. | complex sets of cues can be important in recognizing and responding to conspecific mating competitors and avoiding potentially costly heterospecific competitive interactions. within drosophila melanogaster, males can detect sensory inputs from conspecifics to assess the level of competition. they respond to rivals by significantly extending mating duration and gain significant fitness benefits from doing so. here, we tested the idea that the multiple sensory cues used by d. melanogaster males to ... | 2017 | 29187965 |
| gut microbiomes and reproductive isolation in drosophila. | experimental studies of the evolution of reproductive isolation (ri) in real time are a powerful way in which to reveal fundamental, early processes that initiate divergence. in a classic speciation experiment, populations of drosophila pseudoobscura were subjected to divergent dietary selection and evolved significant positive assortative mating by diet. more recently, a direct role for the gut microbiome in determining this type of ri in drosophila melanogaster has been proposed. manipulation ... | 2017 | 29109277 |
| genetic divergence in closely related sibling species drosophila pseudoobscura, drosophila persimilis and drosophila miranda. | | 1977 | 28567734 |
| genetics of sexual isolation and courtship dysfunction in male hybrids of drosophila pseudoobscura and drosophila persimilis. | despite the importance of sexual isolation to speciation, few studies have analyzed the genetic basis of interspecific mating discrimination, particularly using hybrid males. in this study, i investigated the genetic basis of sexual isolation using male hybrids of drosophila pseudoobscura and d. persimilis. hybrid male mating success was caused by interactions between the x-chromosome and autosomes (or y-chromosome), and different arms of the x-chromosome contributed to mating success with femal ... | 1997 | 28568570 |
| temporal stability of third-chromosome inversion frequencies in drosophila persimilis and d. pseudoobscura. | | 1992 | 28568997 |
| selection for and against ethological isolation between drosophila pseudoobscura and drosophila persimilis. | | 1966 | 28562900 |
| morphological variation in natural and experimental populations of drosophila pseudoobscura and drosophila persimilis. | | 1966 | 28564753 |
| genomics of natural populations: evolutionary forces that establish and maintain gene arrangements in drosophila pseudoobscura. | the evolution of complex traits in heterogeneous environments may shape the order of genes within chromosomes. drosophila pseudoobscura has a rich gene arrangement polymorphism that allows one to test evolutionary genetic hypotheses about how chromosomal inversions are established in populations. d. pseudoobscura has >30 gene arrangements on a single chromosome that were generated through a series of overlapping inversion mutations with >10 inversions with appreciable frequencies and wide geogra ... | 2017 | 29055159 |
| sperm production and sterility in hybrids between two subspecies of drosophila pseudoobscura. | subspecies of drosophila pseudoobscura, one occurring in the united states and the other in bogota, columbia, exhibit haldane's rule in one direction of the cross. additionally, d. pseudoobscura produces two sperm types: short, sterile sperm and long, fertile, sperm. here i examine the relationship between the production of short and long sperm and hybrid sterility. fertile and sterile hybrid males produce a greater proportion of short sperm compared to parental males with sterile hybrids produc ... | 1998 | 28568153 |
| interspecific laboratory competition of the recently sympatric species drosophila subobscura and drosophila pseudoobscura. | -drosophila subobscura and d. pseudoobscura are closely related species coexisting on the west coast of north america, which was recently colonized by d. subobscura. in competition experiments with overlapping generations, d. subobscura is eliminated by d. pseudoobscura in a few generations at all four temperatures and two initial frequencies tested. yet in one-species cultures, d. subobscura thrives at all experimental conditions. single-generation competition experiments reveal lower survivors ... | 1998 | 28568145 |
| postmating isolation analysis in founder-flush experimental populations of drosophila pseudoobscura. | | 1996 | 28568951 |
| selection and the "sex-ratio" polymorphism in natural populations of drosophila pseudoobscura. | "sex-ratio" (sr) is a naturally occurring x-linked meiotic drive system, where the sr-x chromosome is transmitted to nearly all progeny of sr males. it occurs at frequencies of up to 25% in some populations of drosophila pseudoobscura. because of the twofold drive advantage, sr should rapidly fix in populations, causing the extinction of the species, unless opposed by strong selection. i examine several of the adult components of fitness, including the frequencies of all genotypic mating combina ... | 1996 | 28568936 |
| founder-flush speciation in drosophila pseudoobscura: a large-scale experiment. | a founder-flush-crash model of speciation has been proposed that may particularly apply to island and other colonizations. previous laboratory experiments testing the model have given inconsistent results. we have conducted a large experiment with drosophila pseudoobscura designed to meet the essential postulates of the model and to separately test some of the postulates. forty-five experimental and 12 control populations have been studied during seven successive founder-flush-crash cycles, or a ... | 1993 | 28568735 |
| reproductive isolation as a consequence of adaptive divergence in drosophila pseudoobscura. | | 1989 | 28564510 |
| laboratory evolution of epicuticular hydrocarbon composition and cuticular permeability in drosophila pseudoobscura: effects on sexual dimorphism and thermal-acclimation ability. | | 1989 | 28568563 |
| viabilities of amylase genotypes in drosophila pseudoobscura on starch and maltose food. | in order to study the relationship between selection on an enzyme and the environment, viability was measured for genotypes at the α-amylase (amy) locus of d. pseudoobscura on food containing either starch as the primary source of carbohydrates or, as a control, maltose, the breakdown product of starch by amylase. these conditions were chosen to reveal possible differences among these genotypes in their abilities to survive on starch food. counted numbers of larvae were cultured on food with low ... | 1987 | 28563764 |
| sperm predominance among drosophila pseudoobscura karyotypes. | | 1984 | 28555808 |
| multiple mating and female fitness in drosophila pseudoobscura. | | 1983 | 28568127 |
| resource partitioning among genotypes of drosophila pseudoobscura. | | 1983 | 28568031 |
| a study of reaction norms in natural populations of drosophila pseudoobscura. | | 1982 | 28567833 |
| "sex-ratio" trait, sex composition, and relative abundance in drosophila pseudoobscura. | | 1982 | 28581105 |
| using frequency distributions to detect selection: inversion polymorphisms in drosophila pseudoobscura. | | 1981 | 28563401 |
| multiple mating and the "sex-ratio" trait in drosophila pseudoobscura. | | 1981 | 28563371 |
| r- and k-selection in drosophila pseudoobscura. | | 1980 | 28568469 |
| frequency-dependent mating in a modified allozyme locus of drosophila pseudoobscura. | | 1979 | 28563948 |
| population genetics of mexican drosophila vi. cytogenetic aspects of the inversion polymorphism in drosophila pseudoobscura. | | 1979 | 28568185 |
| modifiers and "sex ratio" in drosophila pseudoobscura. | | 1978 | 28567934 |
| mating pattern and mating success of drosophila pseudoobscura karyotypes in large experimental populations. | | 1978 | 28563737 |
| evolutionary divergence between two populations of drosophila pseudoobscura. | | 1977 | 28563476 |
| effects of age, rearing and mating experiences on frequency dependent sexual selection in drosophila pseudoobscura. | | 1976 | 28565052 |
| selection for mating activity in two chromosomal arrangements of drosophila pseudoobscura. | | 1975 | 28563183 |
| population density and mating rates in drosophila pseudoobscura. | | 1975 | 28555850 |
| genetics of natural populations xlii. three decades of genetic change in drosophila pseudoobscura. | | 1975 | 28563287 |
| rigid and flexible chromosomal polymorphisms in neighboring populations of drosophila pseudoobscura. | | 1974 | 28563030 |
| genetic divergence in body size among experimental populations of drosophila pseudoobscura kept at different temperatures. | | 1973 | 28564779 |
| maintenance of chromosomal polymorphism in a population of drosophila pseudoobscura. ii. fecundity, longevity, viability and competitive fitness. | | 1973 | 28563660 |