Accumulation of spontaneous mutations in the ciliate Tetrahymena thermophila.

abstract：:Specialized insect mouthparts, such as those of Drosophila, are derived from an ancestral mandibulate state, but little is known about the developmental genetics of mandibulate mouthparts. Here, we study the metamorphic patterning of mandibulate mouthparts of the beetle Tribolium castaneum, using RNA interference to d...

journal_title：Genetics

authors： Angelini DR,Smith FW,Aspiras AC,Kikuchi M,Jockusch EL

更新日期：2012-02-01 00:00:00

abstract：:We have developed defined genetic lines of the hydroid Hydractinia symbiolongicarpus and confirmed earlier results showing that allorecognition is controlled by a single chromosomal region within these lines. In a large backcross population, we detected recombinants that display a fusibility phenotype distinct from ty...

journal_title：Genetics

authors： Cadavid LF,Powell AE,Nicotra ML,Moreno M,Buss LW

更新日期：2004-05-01 00:00:00

abstract：:We analyzed linkage and chromosomal positions of genes in A. lyrata ssp. petraea that are located near the centromere (CEN) regions of A. thaliana, using at least two genes from the short and long arms of each chromosome. In our map, genes from all 10 A. thaliana chromosome arms are also tightly linked in A. lyrata. G...

journal_title：Genetics

authors： Kawabe A,Hansson B,Hagenblad J,Forrest A,Charlesworth D

更新日期：2006-07-01 00:00:00

abstract：:A recent sperm-typing study by Jeffreys and Neumann suggested that recombination rates in different individuals at the DNA2 recombination hotspot appeared to be highly dependent on their genotype at a particular A/G SNP, FG11. Specifically, individuals who carried at least one copy of the A allele at this SNP exhibite...

journal_title：Genetics

authors： Hellenthal G,Pritchard JK,Stephens M

更新日期：2006-03-01 00:00:00

abstract：:We discuss the conceptual conflict between a slow series of gene substitutions as the mechanism of evolutionary change, and the apparent need for rapid and coordinated changes at many loci simultaneously in producing complex adaptations. To improve on the limitations of classical theory and accommodate the enormous am...

journal_title：Genetics

authors： Koehler DO,Whitten BL,Gregg TG

更新日期：1980-03-01 00:00:00

abstract：:The micronutrient boron is essential in maintaining the structure of plant cell walls and is critical for high yields in crop species. Boron can move into plants by diffusion or by active and facilitated transport mechanisms. We recently showed that mutations in the maize boron efflux transporter ROTTEN EAR (RTE) caus...

journal_title：Genetics

authors： Chatterjee M,Liu Q,Menello C,Galli M,Gallavotti A

更新日期：2017-08-01 00:00:00

abstract：:The endoplasmic reticulum (ER) is an extensive organelle in neurons with important roles at synapses including the regulation of cytosolic Ca2+, neurotransmission, lipid metabolism, and membrane trafficking. Despite intriguing evidence for these crucial functions, how the presynaptic ER influences synaptic physiology ...

journal_title：Genetics

authors： Kikuma K,Li X,Kim D,Sutter D,Dickman DK

更新日期：2017-11-01 00:00:00

abstract：:Five bivariate distributions of wing dimensions of Drosophila melanogaster were measured, in flies 1) subjected to four defined environmental regimes during development, 2) taken directly from nature in seven U.S. states, 3) selected in ten populations for change in wing form, and 4) sampled from 21 long inbred wild-t...

journal_title：Genetics

authors： Weber KE

更新日期：1990-12-01 00:00:00

abstract：:During meiosis homologous chromosomes replicate once, pair, experience recombination, and undergo two rounds of segregation to produce haploid meiotic products. The rec8(+), rec10(+), and rec11(+) genes of the fission yeast Schizosaccharomyces pombe exhibit similar specificities for meiotic recombination and rec8(+) i...

journal_title：Genetics

authors： Krawchuk MD,DeVeaux LC,Wahls WP

更新日期：1999-09-01 00:00:00

abstract：:Vegetative incompatibility in fungi has long been known to reduce the transmission of viruses between individuals, but the barrier to transmission is incomplete. In replicated laboratory assays, we showed conclusively that the transmission of viruses between individuals of the chestnut blight fungus Cryphonectria para...

journal_title：Genetics

authors： Cortesi P,McCulloch CE,Song H,Lin H,Milgroom MG

更新日期：2001-09-01 00:00:00

abstract：:In budding yeast, at least 10 proteins are required for formation of the double-strand breaks (DSBs) that initiate meiotic recombination. Spo11 is the enzyme responsible for cleaving DNA and is found in a complex that also contains Ski8, Rec102, and Rec104. The Mre11/Rad50/Xrs2 complex is required for both DSB formati...

journal_title：Genetics

authors： Li J,Hooker GW,Roeder GS

更新日期：2006-08-01 00:00:00

abstract：:The Dissociation (Ds) mutant, Bz-wm, of the maize bronze-1 (bz) locus conditions a leaky phenotype. Plants carrying this mutant allele synthesize a low amount of an altered Bz gene product, which leads to reduced anthocyanin pigmentation in the seed. The molecular analysis reported here shows that the Bz-wm mutant has...

journal_title：Genetics

authors： Schiefelbein JW,Furtek DB,Dooner HK,Nelson OE Jr

更新日期：1988-11-01 00:00:00

abstract：:A simple two-locus gene conversion model is considered to investigate the amounts of DNA variation and linkage disequilibrium in small multigene families. The exact solutions for the expectations and variances of the amounts of variation within and between two loci are obtained. It is shown that gene conversion increa...

journal_title：Genetics

authors： Innan H

更新日期：2002-06-01 00:00:00

abstract：:We develop the theory for computing the joint frequency spectra of alleles in two closely related species. We allow for arbitrary population growth in both species after they had a common ancestor. We focus on the case in which a single chromosome is sequenced from one of the species. We use classical diffusion theory...

journal_title：Genetics

authors： Chen H,Green RE,Pääbo S,Slatkin M

更新日期：2007-09-01 00:00:00

abstract：:Dis3 encodes a conserved RNase that degrades or processes all RNA species via an N-terminal PilT N terminus (PIN) domain and C-terminal RNB domain that harbor, respectively, endonuclease activity and 3'-5' exonuclease activity. In Schizosaccharomyces pombe, dis3 mutations cause chromosome missegregation and failure in...

journal_title：Genetics

authors： Snee MJ,Wilson WC,Zhu Y,Chen SY,Wilson BA,Kseib C,O'Neal J,Mahajan N,Tomasson MH,Arur S,Skeath JB

更新日期：2016-06-01 00:00:00

abstract：:Mutations in the SPT10 and SPT21 genes were originally isolated as suppressors of Ty and LTR (delta) insertion mutations in Saccharomyces cerevisiae, and the genes were shown to be required for normal transcription at a number of loci in yeast. Now we have cloned, sequenced, mapped and mutagenized SPT10 and SPT21. Sin...

journal_title：Genetics

authors： Natsoulis G,Winston F,Boeke JD

更新日期：1994-01-01 00:00:00

abstract：:This paper studies the properties of a new class of demographic parameters for age-structured populations and analyzes the effect of natural selection on these parameters. Two new demographic variables are introduced: the entropy of a population and the reproductive potential. The entropy of a population measures the ...

journal_title：Genetics

authors： Demetrius L

更新日期：1975-03-01 00:00:00

abstract：:Segregation data were obtained for 1260 potato linkage group I-specific AFLP loci from a heterozygous diploid potato population. Analytical tools that identified potential typing errors and/or inconsistencies in the data and that assembled cosegregating markers into bins were applied. Bins contain multiple-marker data...

journal_title：Genetics

authors： Isidore E,van Os H,Andrzejewski S,Bakker J,Barrena I,Bryan GJ,Caromel B,van Eck H,Ghareeb B,de Jong W,van Koert P,Lefebvre V,Milbourne D,Ritter E,van der Voort JR,Rousselle-Bourgeois F,van Vliet J,Waugh R

更新日期：2003-12-01 00:00:00

abstract：:We examined linkage relationships for RecBC-mediated recombination in lytic cycle crosses of lambda phages bearing two cohesive end sites (cos) oriented in the same direction. The relationships obtained imply that a given recombinant tends to be packaged from the cos site that is the nearer one to the right of the exc...

journal_title：Genetics

authors： Stahl FW,Kobayashi I,Thaler D,Stahl MM

更新日期：1986-06-01 00:00:00

abstract：:Extensive Monte Carlo simulations are conducted of spatial distributions of two-locus genotypes in large, continuous populations under isolation by distance models. The results show that substantial patches of double homozygotes are present in the spatial structures, even when loci are unlinked. The stochastic spread ...

journal_title：Genetics

authors： Epperson BK

更新日期：1995-05-01 00:00:00

abstract：:Crossover interference in meiosis is often modeled via stationary renewal processes. Here we consider a new model to incorporate the known biological feature of "obligate chiasma" whereby in most organisms each bivalent almost always has at least one crossover. The initial crossover is modeled as uniformly distributed...

journal_title：Genetics

authors： Falque M,Mercier R,Mézard C,de Vienne D,Martin OC

更新日期：2007-07-01 00:00:00

abstract：:The present report is a study of 60 intragenic suppressors located in the A or E group of the b2 spore-color locus of Ascobolus immersus. The frameshift nature of the suppressors was shown by 19 combinations of plus and minus suppressor mutations. The location of the mutation sites on the genetic map of group A was de...

journal_title：Genetics

authors： Leblon G

更新日期：1979-08-01 00:00:00

abstract：:To reveal phenotypic and functional genomic patterns of mitonuclear adaptation, a laboratory adaptation study with Caenorhabditis elegans nematodes was conducted in which independently evolving lines were initiated from a low-fitness mitochondrial electron transport chain (ETC) mutant, gas-1 Following 60 generations o...

journal_title：Genetics

authors： Wernick RI,Christy SF,Howe DK,Sullins JA,Ramirez JF,Sare M,Penley MJ,Morran LT,Denver DR,Estes S

更新日期：2019-03-01 00:00:00

abstract：:The cosQ site of bacteriophage lambda is required for DNA packaging termination. Previous studies have shown that cosQ mutations can be suppressed in three ways: by a local suppressor within cosQ, an increase in the length of the lambda chromosome, and missense mutations affecting the prohead's portal protein, gpB. In...

journal_title：Genetics

authors： Wieczorek DJ,Didion L,Feiss M

更新日期：2002-05-01 00:00:00

abstract：:The allozymic variation at at the esterase-6 locus examined in fourteen samples of natural populations of Drosophila simulans collected in two different localities. The samples were collected from different species of fruits in the two localities and from banana baits located some meters apart from the fruits. The ana...

journal_title：Genetics

authors： de Albuquerque CM,Napp M

更新日期：1981-06-01 00:00:00

abstract：:Significant amounts of apoptosis take place during Drosophila development. The proapoptotic genes reaper (rpr), grim, and head involution defective (hid) are required for virtually all embryonic apoptosis. The proteins encoded by these genes share a short region of homology at their amino termini. The Drosophila IAP h...

journal_title：Genetics

authors： Lisi S,Mazzon I,White K

更新日期：2000-02-01 00:00:00

abstract：:We present a Bayesian method for characterizing the mating system of populations reproducing through a mixture of self-fertilization and random outcrossing. Our method uses patterns of genetic variation across the genome as a basis for inference about reproduction under pure hermaphroditism, gynodioecy, and a model de...

journal_title：Genetics

authors： Redelings BD,Kumagai S,Tatarenkov A,Wang L,Sakai AK,Weller SG,Culley TM,Avise JC,Uyenoyama MK

更新日期：2015-11-01 00:00:00

abstract：:The Saccharomyces cerevisiae PHO85 gene encodes a nonessential cyclin-dependent kinase that associates with 10 cyclin subunits. To survey the functions provided by Pho85, we identified mutants that require PHO85 for viability. We identified mutations that define seven Pho Eighty-Five Requiring or Efr loci, six of whic...

journal_title：Genetics

authors： Lenburg ME,O'Shea EK

更新日期：2001-01-01 00:00:00

abstract：:R1 and R2 elements are non-LTR retrotransposons that insert specifically into the 28S rRNA genes of arthropods. The process of concerted evolution of the rDNA locus should give rise to rapid turnover of these mobile elements compared to elements that insert at sites throughout a genome. To estimate the rate of R1 and ...

journal_title：Genetics

authors： Pérez-González CE,Eickbush TH

更新日期：2002-10-01 00:00:00

abstract：:We analyze two models of the maintenance of quantitative genetic variance in a mixed-mating system of self-fertilization and outcrossing. In both models purely additive genetic variance is maintained by mutation and recombination under stabilizing selection on the phenotype of one or more quantitative characters. The ...

journal_title：Genetics

authors： Lande R,Porcher E

更新日期：2015-07-01 00:00:00