Evolutionary strata in a small mating-type-specific region of the smut fungus Microbotryum violaceum.

abstract：:Chromatin insulators separate active from repressed chromatin domains. In yeast the RNA pol III transcription machinery bound to tRNA genes function with histone acetylases and chromatin remodelers to restrict the spread of heterochromatin. Our results collectively demonstrate that binding of TFIIIC is necessary for i...

journal_title：Genetics

authors： Valenzuela L,Dhillon N,Kamakaka RT

更新日期：2009-09-01 00:00:00

abstract：:Research on the genetics of natural populations was revolutionized in the 1990s by methods for genotyping noninvasively collected samples. However, these methods have remained largely unchanged for the past 20 years and lag far behind the genomics era. To close this gap, here we report an optimized laboratory protocol...

journal_title：Genetics

authors： Snyder-Mackler N,Majoros WH,Yuan ML,Shaver AO,Gordon JB,Kopp GH,Schlebusch SA,Wall JD,Alberts SC,Mukherjee S,Zhou X,Tung J

更新日期：2016-06-01 00:00:00

abstract：:Zymograms were analyzed of a number of Triticum aestivum derivatives which incorporated a segment of the Aegilops umbellulata chromosome bearing resistance to leaf rust. Evidence has been presented which suggests that genes involved in the production of two peroxidases and a single peptidase are located on the short a...

journal_title：Genetics

authors： Macdonald T,Smith HH

更新日期：1972-09-01 00:00:00

abstract：:A spontaneously arising nuclear mutation, ss-1, has been identified in Chlamydomonas reinhardtii that decreases both streptomycin and spectinomycin resistance levels about 10-fold after its introduction into all wild-type, streptomycin-resistant and spectinomycin-resistant strains examined. The mutations for resistanc...

journal_title：Genetics

authors： Lee RW,Sapp JA

更新日期：1978-04-01 00:00:00

abstract：:Chromosomal double-strand breaks (DSBs) that have only one end with homology to a donor duplex undergo repair by strand invasion followed by replication to the chromosome terminus (break-induced replication, BIR). Using a transformation-based assay system, it was previously shown that BIR could occur by several rounds...

journal_title：Genetics

authors： Stafa A,Donnianni RA,Timashev LA,Lam AF,Symington LS

更新日期：2014-04-01 00:00:00

abstract：:Conversion between duplicated genes limits their independent evolution. Models in which conversion frequencies decrease as genes diverge are examined to determine conditions under which genes can "escape" further conversion and hence escape from a gene family. A review of results from various recombination systems sug...

journal_title：Genetics

authors： Walsh JB

更新日期：1987-11-01 00:00:00

abstract：:To further understand how the nematode Caenorhabditis elegans defends itself against pathogen attack, we analyzed enhanced pathogen resistance (epr) mutants obtained from a forward genetic screen. We also examined several well-characterized sterile mutants that exhibit an Epr phenotype. We found that sterility and pat...

journal_title：Genetics

authors： Miyata S,Begun J,Troemel ER,Ausubel FM

更新日期：2008-02-01 00:00:00

abstract：:Sequence divergence among the mitochondrial (mt) DNA of nine Lycopersicon and two closely related Solanum species was estimated using the shared fragment method. A portion of each mt genome was highlighted by probing total DNA with a series of plasmid clones containing mt-specific DNA fragments from Lycopersicon penne...

journal_title：Genetics

authors： McClean PE,Hanson MR

更新日期：1986-03-01 00:00:00

abstract：:Allorecognition is ubiquitous, or nearly so, amongst colonial invertebrates. Despite the prominent role that such phenomena have played both in evolutionary theory and in on the origin of the vertebrate immune system, unambiguous data on the transmission genetics of fusibility (i.e., the ability of two individuals to ...

journal_title：Genetics

authors： Mokady O,Buss LW

更新日期：1996-06-01 00:00:00

abstract：:Actin is a major component of the cytoskeleton and one of the most abundant proteins found in eukaryotic cells. Comparative sequence analysis shows that this essential gene has been highly conserved throughout eukaryotic evolution making it useful for phylogenetic analysis. Complete cDNA clones for the actin-encoding ...

journal_title：Genetics

authors： Fletcher LD,McDowell JM,Tidwell RR,Meagher RB,Dykstra CC

更新日期：1994-07-01 00:00:00

abstract：:It is well known that an allele causing increased recombination is expected to proliferate as a result of genetic drift in a finite population undergoing selection, without requiring other mechanisms. This is supported by recent simulations apparently demonstrating that, in small populations, drift is more important t...

journal_title：Genetics

authors： Iles MM,Walters K,Cannings C

更新日期：2003-12-01 00:00:00

abstract：:Evidence from many organisms indicates that the conserved RecQ helicases function in the maintenance of genomic stability. Mutation of SGS1 and WRN, which encode RecQ homologues in budding yeast and humans, respectively, results in phenotypes characteristic of premature aging. Mutation of SRS2, another DNA helicase, c...

journal_title：Genetics

authors： McVey M,Kaeberlein M,Tissenbaum HA,Guarente L

更新日期：2001-04-01 00:00:00

abstract：:Microtubules are dynamic structures that must elongate, disassemble, and be cleaved into smaller pieces for proper neuronal development and function. The AAA ATPase Spastin severs microtubules along their lengths and is thought to regulate the balance between long, stable filaments and shorter fragments that seed exte...

journal_title：Genetics

authors： Ozdowski EF,Gayle S,Bao H,Zhang B,Sherwood NT

更新日期：2011-09-01 00:00:00

abstract：:Because some metabolic intermediates are involved in more than one pathway, crosstalk between pathways is crucial to maintaining homeostasis. AMP and histidine biosynthesis pathways are coregulated at the transcriptional level in response to adenine availability. 5'-Phosphoribosyl-4-carboxamide-5-aminoimidazole (AICAR...

journal_title：Genetics

authors： Rébora K,Laloo B,Daignan-Fornier B

更新日期：2005-05-01 00:00:00

abstract：:Hybrid sterility is a common form of reproductive isolation between nascent species. Although hybrid sterility is routinely documented and genetically dissected in speciation studies, its developmental basis is rarely examined, especially in generations beyond the F1 generation. To identify phenotypic and genetic dete...

journal_title：Genetics

authors： Schwahn DJ,Wang RJ,White MA,Payseur BA

更新日期：2018-12-01 00:00:00

abstract：:Orthologous positions of 55 genes associated with height in four human populations were located on the bovine genome. Single nucleotide polymorphisms close to eight of these genes were significantly associated with stature in cattle (Bos taurus and Bos indicus). This suggests that these genes may contribute to control...

journal_title：Genetics

authors： Pryce JE,Hayes BJ,Bolormaa S,Goddard ME

更新日期：2011-03-01 00:00:00

abstract：:The wild-type Salmonella typhimurium strain LT2 contains six copies of the insertion sequence element IS200 which is unique to Salmonella. We have determined the chromosomal locations of all six copies of IS200 in strain LT2. This was done by mapping the positions of Tn10 elements inserted near each copy of IS200. Suc...

journal_title：Genetics

authors： Lam S,Roth JR

更新日期：1983-12-01 00:00:00

abstract：:Rates of molecular evolution at some loci are more irregular than described by simple Poisson processes. Three situations under which molecular evolution would not follow simple Poisson processes are reevaluated from the viewpoint of the neutrality hypothesis: concomitant or multiple substitutions in a gene, fluctuati...

journal_title：Genetics

authors： Takahata N

更新日期：1987-05-01 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：:Paramecium has long been a model eukaryote. The sequence of the Paramecium tetraurelia genome reveals a history of three successive whole-genome duplications (WGDs), and the sequences of P. biaurelia and P. sexaurelia suggest that these WGDs are shared by all members of the aurelia species complex. Here, we present th...

journal_title：Genetics

authors： McGrath CL,Gout JF,Doak TG,Yanagi A,Lynch M

更新日期：2014-08-01 00:00:00

abstract：:Epistasis contributes significantly to intrapopulation variation in floral morphology, development time, and male fitness components of Mimulus guttatus. This is demonstrated with a replicated line-cross experiment involving slightly over 7000 plants. The line-cross methodology is based on estimates for means. It thus...

journal_title：Genetics

authors： Kelly JK

更新日期：2005-12-01 00:00:00

abstract：:Polyploidy has occurred throughout the evolutionary history of all eukaryotes and is extremely common in plants. Reunification of the evolutionarily divergent genomes in allopolyploids creates regulatory incompatibilities that must be reconciled. Here we report genomewide gene expression analysis of Arabidopsis synthe...

journal_title：Genetics

authors： Wang J,Tian L,Lee HS,Wei NE,Jiang H,Watson B,Madlung A,Osborn TC,Doerge RW,Comai L,Chen ZJ

更新日期：2006-01-01 00:00:00

abstract：:Life-history traits or "fitness components"-such as age and size at maturity, fecundity and fertility, age-specific rates of survival, and life span-are the major phenotypic determinants of Darwinian fitness. Analyzing the evolution and genetics of these phenotypic targets of selection is central to our understanding ...

journal_title：Genetics

authors： Flatt T

更新日期：2020-01-01 00:00:00

abstract：:A method for estimating the average level of gene flow among populations is introduced. The method provides an estimate of Nm, where N is the size of each local population in an island model and m is the migration rate. This method depends on knowing the phylogeny of the nonrecombining segments of DNA that are sampled...

journal_title：Genetics

authors： Slatkin M,Maddison WP

更新日期：1989-11-01 00:00:00

abstract：:A correlation between diversity levels and rates of recombination is predicted both by models of positive selection, such as hitchhiking associated with the rapid fixation of advantageous mutations, and by models of purifying selection against strongly deleterious mutations (commonly referred to as "background selecti...

journal_title：Genetics

authors： Andolfatto P,Przeworski M

更新日期：2001-06-01 00:00:00

abstract：:The three-dimensional (3D) organization of chromosomes can influence transcription. However, the frequency and magnitude of these effects remain debated. To determine how changes in chromosome positioning affect transcription across thousands of genes with minimal perturbation, we characterized nuclear organization an...

journal_title：Genetics

authors： Di Stefano M,Di Giovanni F,Pozharskaia V,Gomar-Alba M,Baù D,Carey LB,Marti-Renom MA,Mendoza M

更新日期：2020-03-01 00:00:00

abstract：:We present methods for estimating the parameters of inheritance and selection that appear in a quantitative genetic model for the evolution growth trajectories and other "infinite-dimensional" traits that we recently introduced. Two methods for estimating the additive genetic covariance function are developed, a "full...

journal_title：Genetics

authors： Kirkpatrick M,Lofsvold D,Bulmer M

更新日期：1990-04-01 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：:X chromosome inactivation (XCI) is an epigenetic process that almost completely inactivates one of two X chromosomes in somatic cells of mammalian females. A few genes are known to escape XCI and the mechanism for this escape remains unclear. Here, using mouse trophoblast stem (TS) cells, we address whether particular...

journal_title：Genetics

authors： Mugford JW,Starmer J,Williams RL Jr,Calabrese JM,Mieczkowski P,Yee D,Magnuson T

更新日期：2014-06-01 00:00:00

abstract：:Key steps of essential metabolic pathways are housed in plant peroxisomes. We conducted a microscopy-based screen for anomalous distribution of peroxisomally targeted fluorescence in Arabidopsis thaliana This screen uncovered 34 novel alleles in 15 genes affecting oil body mobilization, fatty acid β-oxidation, the gly...

journal_title：Genetics

authors： Rinaldi MA,Patel AB,Park J,Lee K,Strader LC,Bartel B

更新日期：2016-11-01 00:00:00