An unusual Y chromosome of Drosophila simulans carrying amplified rDNA spacer without rRNA genes.

abstract：:The human pathogen Candida albicans is considered an obligate commensal of animals, yet it is occasionally isolated from trees, shrubs, and grass. We generated genome sequence data for three strains of C. albicans that we isolated from oak trees in an ancient wood pasture, and compared these to the genomes of over 200...

journal_title：Genetics

authors： Bensasson D,Dicks J,Ludwig JM,Bond CJ,Elliston A,Roberts IN,James SA

更新日期：2019-01-01 00:00:00

abstract：:We have analyzed pregastrulation cleavage patterns in Caenorhabditis elegans embryos homozygous for various chromosomal deficiencies. By two different estimates these deficiencies represent between 37 and 49% of the genome, including the entire X chromosome and substantial portions of each of the five autosomes. Among...

journal_title：Genetics

authors： Storfer-Glazer FA,Wood WB

更新日期：1994-06-01 00:00:00

abstract：:We derive a formula for the distribution of the length T of the recombination interval containing a target gene and using N gametes in a region where R kilobases correspond to 1 cM. The formula can be used to calculate the number of meiotic events required to narrow a target gene down to a specific interval size and h...

journal_title：Genetics

authors： Durrett RT,Chen KY,Tanksley SD

更新日期：2002-01-01 00:00:00

abstract：:Samples of Rhynchosporium secalis were collected from two experimental barley populations known to carry a diverse array of alleles for resistance to this fungal pathogen. Classification of 163 isolates for four putative isozyme systems, a colony color dimorphism and 20 ribosomal DNA restriction fragment length varian...

journal_title：Genetics

authors： McDermott JM,McDonald BA,Allard RW,Webster RK

更新日期：1989-07-01 00:00:00

abstract：:Gene targeting using sequence insertion vectors generally results in integration of one copy of the targeting vector generating a tandem duplication of the cognate chromosomal region of homology. However, occasionally the target locus is found to contain >1 copy of the integrated vector. The mechanism by which the lat...

journal_title：Genetics

authors： Ng P,Baker MD

更新日期：1999-03-01 00:00:00

abstract：:The fixation of a beneficial allele in a population leaves a well-characterized signature in patterns of nucleotide variation at linked sites. This signature can be used to estimate the time since fixation from patterns of polymorphism in extant individuals. I introduce a method to assess the support in polymorphism d...

journal_title：Genetics

authors： Przeworski M

更新日期：2003-08-01 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：:In eukaryotic cells, checkpoint pathways arrest cell-cycle progression if a particular event has failed to complete appropriately or if an important intracellular structure is defective or damaged. Saccharomyces cerevisiae strains that lack the SFP1 gene fail to arrest at the G2 DNA-damage checkpoint in response to ge...

journal_title：Genetics

authors： Xu Z,Norris D

更新日期：1998-12-01 00:00:00

abstract：:The characterization of the distribution of mutational effects is a key goal in evolutionary biology. Recently developed deep-sequencing approaches allow for accurate and simultaneous estimation of the fitness effects of hundreds of engineered mutations by monitoring their relative abundance across time points in a si...

journal_title：Genetics

authors： Matuszewski S,Hildebrandt ME,Ghenu AH,Jensen JD,Bank C

更新日期：2016-09-01 00:00:00

abstract：:Plant endo-beta-1,3-glucanases (EGases) degrade the cell wall polysaccharides of attacking pathogens and release elicitors of additional plant defenses. Isozymes EGaseA and EGaseB of soybean differ in susceptibility to a glucanase inhibitor protein (GIP1) produced by Phytophthora sojae, a major soybean pathogen. EGase...

journal_title：Genetics

authors： Bishop JG,Ripoll DR,Bashir S,Damasceno CM,Seeds JD,Rose JK

更新日期：2005-02-01 00:00:00

abstract：:An elevated mutation rate can provide cells with a source of mutations to adapt to changing environments. We identified a negative epistatic interaction involving naturally occurring variants in the MLH1 and PMS1 mismatch repair (MMR) genes of Saccharomyces cerevisiae We hypothesized that this MMR incompatibility, cre...

journal_title：Genetics

authors： Bui DT,Friedrich A,Al-Sweel N,Liti G,Schacherer J,Aquadro CF,Alani E

更新日期：2017-04-01 00:00:00

abstract：:An analysis of mortality is undertaken in two breeds of pigs: Danish Landrace and Yorkshire. Zero-inflated and standard versions of hierarchical Poisson, binomial, and negative binomial Bayesian models were fitted using Markov chain Monte Carlo (MCMC). The objectives of the study were to investigate whether there is s...

journal_title：Genetics

authors： Varona L,Sorensen D

更新日期：2010-01-01 00:00:00

abstract：:The genetic basis of body weight in the mouse was investigated by measuring frequency changes of microsatellite marker alleles in lines divergently selected for body weight from a base population of a cross between two inbred strains. In several regions of the genome, sharp peaks of frequency change at linked markers ...

journal_title：Genetics

authors： Keightley PD,Hardge T,May L,Bulfield G

更新日期：1996-01-01 00:00:00

abstract：:Several multilocus models that incorporate both preferential mating and viability selection are studied. Specifically, a class of symmetric heterozygosity models are considered that assign individuals to phenotypic classes according to which loci are in heterozygous state regardless of the actual allelic content. Othe...

journal_title：Genetics

authors： Karlin S,Raper J

更新日期：1982-01-01 00:00:00

abstract：:Differentiation in morphometric traits among experimental populations of the housefly subjected to an experimental bottleneck was examined for replicate lines founded with one, four or 16 pairs of flies. Differentiation among lines within a bottleneck size was significantly greater than predicted by drift in relation ...

journal_title：Genetics

authors： Bryant EH,Combs LM,McCommas SA

更新日期：1986-12-01 00:00:00

abstract：:I report a framework for assessing whether one mitochondrial genome is significantly more rearranged than another. This relative rate of gene rearrangement test (RGR) behaves according to expectation, distinguishing between highly rearranged and mildly rearranged insect mitochondrial genomes. It may be more broadly ap...

journal_title：Genetics

authors： Dowton M

更新日期：2004-06-01 00:00:00

abstract：:Hotspots regulate the position and frequency of Spo11 (Rec12)-initiated meiotic recombination, but paradoxically they are suicidal and are somehow resurrected elsewhere in the genome. After the DNA sequence-dependent activation of hotspots was discovered in fission yeast, nearly two decades elapsed before the key real...

journal_title：Genetics

authors： Wahls WP,Davidson MK

更新日期：2011-11-01 00:00:00

abstract：:As a genetic mutation is passed down across generations, it distinguishes those genomes that have inherited it from those that have not, providing a glimpse of the genealogical tree relating the genomes to each other at that site. Statistical summaries of genetic variation therefore also describe the underlying geneal...

journal_title：Genetics

authors： Ralph P,Thornton K,Kelleher J

更新日期：2020-07-01 00:00:00

abstract：:Disequilibrium pattern analysis, a general method for analyzing evolutionary events acting on pairs of tightly linked polymorphic loci, is applied to a large sample of Danish individuals typed for A and B loci of the HLA (human leukocyte antigen) system. Cases of selection on particular haplotypes are revealed from pa...

journal_title：Genetics

authors： Klitz W,Thomson G

更新日期：1987-08-01 00:00:00

abstract：:It is well known that most new mutations that affect fitness exert deleterious effects and that natural populations are often composed of subpopulations (demes) connected by gene flow. To gain a better understanding of the joint effects of purifying selection and population structure, we focus on a scenario where an a...

journal_title：Genetics

authors： Zeng K,Corcoran P

更新日期：2015-12-01 00:00:00

abstract：:Multilocus surveys of sequence variation can be used to identify targets of directional selection, which are expected to have reduced levels of variation. Following a population bottleneck, the signal of directional selection may be hard to detect because many loci may have low variation by chance and the frequency sp...

journal_title：Genetics

authors： Hamblin MT,Casa AM,Sun H,Murray SC,Paterson AH,Aquadro CF,Kresovich S

更新日期：2006-06-01 00:00:00

abstract：:Inbred strains of mice show differential skin inflammatory reactivity following the topical application of polycyclic hydrocarbons. Strains also differ in the extent to which hepatic aryl hydrocarbon hydroxylase activity is induced by these compounds. Differential inflammatory response and hydroxylase inducibility are...

journal_title：Genetics

authors： Thomas PE,Hutton JJ,Taylor BA

更新日期：1973-08-01 00:00:00

abstract：:Most studies of mutation rates implicitly assume that they remain constant throughout development of the germline. However, researchers recently used a novel statistical framework to reveal that mutation rates differ dramatically during sperm development in Drosophila melanogaster. Here a general framework is describe...

journal_title：Genetics

authors： Fu YX

更新日期：2013-08-01 00:00:00

abstract：:In its hypermutable state, an unstable singed allele, sn(w), mutates in the germline to two other alleleic forms at a total frequency usually between 40 and 60%. In its stable state, the mutation rate of sn(w) is essentially zero. Its state depends on an extrachromosomal condition indistinguishable from a property cal...

journal_title：Genetics

authors： Engels WR

更新日期：1981-07-01 00:00:00

abstract：:Oligosyndactylism (Os) is a radiation-induced mutation on mouse chromosome 8 associated with early postimplantation lethality in homozygotes and abnormal development of the limbs and kidneys in heterozygotes. The recessive lethal effect of Os is due to a mitotic block of the embryonic cells that becomes apparent at th...

journal_title：Genetics

authors： Pravtcheva DD,Wise TL

更新日期：1996-12-01 00:00:00

abstract：:Heterologous yeast artificial chromosomes (YACs) do not recombine with each other and missegregate in 25% of meiosis I events. Recombination hot spots in the yeast Saccharomyces cerevisiae have previously been shown to be associated with sites of meiosis-induced double-strand breaks (DSBs). A 6-kb fragment containing ...

journal_title：Genetics

authors： Sears DD,Hieter P,Simchen G

更新日期：1994-12-01 00:00:00

abstract：:Many heterogametic organisms adjust sex chromosome expression to accommodate differences in gene dosage. This requires selective recruitment of regulatory factors to the modulated chromosome. How these factors are localized to a chromosome with requisite accuracy is poorly understood. Drosophila melanogaster males inc...

journal_title：Genetics

authors： Deshpande N,Meller VH

更新日期：2018-08-01 00:00:00

abstract：:The knotted1 gene was first defined by dominant mutations that affect leaf morphology. The original allele, Kn1-O, results from a 17-kb tandem duplication. Mutator (Mu) insertions near the junction of the two repeats suppress the leaf phenotype to different degrees depending on the position of the insertion. The Mu in...

journal_title：Genetics

authors： Mathern J,Hake S

更新日期：1997-09-01 00:00:00

abstract：:As millions of single-nucleotide polymorphisms (SNPs) have been identified and high-throughput genotyping technologies have been rapidly developed, large-scale genomewide association studies are soon within reach. However, since a genomewide association study involves a large number of SNPs it is therefore nearly impo...

journal_title：Genetics

authors： Zhao J,Jin L,Xiong M

更新日期：2006-11-01 00:00:00

abstract：:Conditional cdc1(Ts) mutants of S. cerevisiae arrest with a phenotype similar to that exhibited by Mn(2+)-depleted cells. Sequence similarity between Cdc1p and a class of Mn(2+)-dependent phosphoesterases, as well as the observation that conditional cdc1(Ts) growth can be ameliorated by Mn(2+) supplement, suggests tha...

journal_title：Genetics

authors： Eguez L,Chung YS,Kuchibhatla A,Paidhungat M,Garrett S

更新日期：2004-05-01 00:00:00