The role of breeding and genetics in animal production improvement in the developing countries.

abstract：:A previously employed method that uses the composition of noncoding DNA as the basis of a test for selection between synonymous codons in plastid genes is reevaluated. The test requires the assumption that in the absence of selective differences between synonymous codons the composition of silent sites in coding seque...

journal_title：Genetics

authors： Morton BR

更新日期：2001-09-01 00:00:00

abstract：:We examined the effect of a single variant repeat on the stability of a 51-base pair (bp) microsatellite (poly GT). We found that the insertion stabilizes the microsatellite about fivefold in wild-type strains. The stabilizing effect of the variant base was also observed in strains with mutations in the DNA mismatch r...

journal_title：Genetics

authors： Petes TD,Greenwell PW,Dominska M

更新日期：1997-06-01 00:00:00

abstract：:Drosophila melanogaster heterochromatin protein 2 (HP2) interacts with heterochromatin protein 1 (HP1). In polytene chromosomes, HP2 and HP1 colocalize at the chromocenter, telomeres, and the small fourth chromosome. We show here that HP2 is present in the arms as well as the centromeric regions of mitotic chromosomes...

journal_title：Genetics

authors： Shaffer CD,Cenci G,Thompson B,Stephens GE,Slawson EE,Adu-Wusu K,Gatti M,Elgin SC

更新日期：2006-11-01 00:00:00

abstract：:The variances of genetic variances within and between finite populations were systematically studied using a general multiple allele model with mutation in terms of identity by descent measures. We partitioned the genetic variances into components corresponding to genetic variances and covariances within and between l...

journal_title：Genetics

authors： Zeng ZB,Cockerham CC

更新日期：1991-10-01 00:00:00

abstract：:Data for Apis mellifera indicate that the P-3 proteins and one esterase enzyme are controlled by two genes, P-3 and Est, with two alleles each. The frequency of the P-3 alleles is different in the two subspecies (adansonii and ligustica), that for P-3(F) in Italian bees being 46.9% and in African 0.5%. The frequency o...

journal_title：Genetics

authors： Mestriner MA,Contel EP

更新日期：1972-12-01 00:00:00

abstract：:The bristle worm Platynereis dumerilii displays many interesting biological characteristics. These include its reproductive timing, which is synchronized to the moon phase, its regenerative capacity that is hormonally controlled, and a slow rate of evolution, which permits analyses of ancestral genes and cell types. A...

journal_title：Genetics

authors： Zantke J,Bannister S,Rajan VB,Raible F,Tessmar-Raible K

更新日期：2014-05-01 00:00:00

abstract：:The organization of the mitochondrial genome in plants is not well understood. In maize mitochondrial DNA (mtDNA) several subgenomic circular molecules as well as an abundant fraction of linear molecules have been seen by electron microscopy. It has been hypothesized that the circular molecules are the genetic entitie...

journal_title：Genetics

authors： Levy AA,André CP,Walbot V

更新日期：1991-06-01 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：:The importance of mitochondrial DNA (mtDNA) deletions in the progeroid phenotype of exonuclease-deficient DNA polymerase γ mice has been intensely debated. We show that disruption of Mip1 exonuclease activity increases mtDNA deletions 160-fold, whereas disease-associated polymerase variants were mostly unaffected, sug...

journal_title：Genetics

authors： Stumpf JD,Copeland WC

更新日期：2013-06-01 00:00:00

abstract：:Interchromosomal duplications are especially important for the study of X-linked genes. Males inheriting a mutation in a vital X-linked gene cannot survive unless there is a wild-type copy of the gene duplicated elsewhere in the genome. Rescuing the lethality of an X-linked mutation with a duplication allows the mutat...

journal_title：Genetics

authors： Cook RK,Deal ME,Deal JA,Garton RD,Brown CA,Ward ME,Andrade RS,Spana EP,Kaufman TC,Cook KR

更新日期：2010-12-01 00:00:00

abstract：:Dopamine acts through two classes of G protein-coupled receptor (D1-like and D2-like) to modulate neuron activity in the brain. While subtypes of D1- and D2-like receptors are coexpressed in many neurons of the mammalian brain, it is unclear how signaling by these coexpressed receptors interacts to modulate the activi...

journal_title：Genetics

authors： Allen AT,Maher KN,Wani KA,Betts KE,Chase DL

更新日期：2011-07-01 00:00:00

abstract：:Type III galactosemia is a metabolic disorder caused by reduced activity of UDP-galactose-4-epimerase, which participates in galactose metabolism and the generation of various UDP-sugar species. We characterized gale-1 in Caenorhabditis elegans and found that a complete loss-of-function mutation is lethal, as has been...

journal_title：Genetics

authors： Brokate-Llanos AM,Monje JM,Murdoch Pdel S,Muñoz MJ

更新日期：2014-12-01 00:00:00

abstract：:I factors in Drosophila melanogaster are non-LTR retrotransposons that transpose at very high frequencies in the germ line of females resulting from crosses between reactive females (devoid of active I factors) and inducer males (containing active I factors). Constructs containing I factor ORF1 under the control of th...

journal_title：Genetics

authors： Malinsky S,Bucheton A,Busseau I

更新日期：2000-11-01 00:00:00

abstract：:We use the ancestral influence graph (AIG) for a two-locus, two-allele selection model in the limit of a large population size to obtain an analytic approximation for the probability of ultimate fixation of a single mutant allele A. We assume that this new mutant is introduced at a given locus into a finite population...

journal_title：Genetics

authors： Lessard S,Kermany AR

更新日期：2012-02-01 00:00:00

abstract：:The sex-ratio trait described in several Drosophila species is a type of naturally occurring X-linked meiotic drive that causes males bearing a sex-ratio X chromosome to produce progenies with a large excess of females. We have previously reported the occurrence of sex-ratio X chromosomes in Drosophila simulans. In th...

journal_title：Genetics

authors： Cazemajor M,Landré C,Montchamp-Moreau C

更新日期：1997-10-01 00:00:00

abstract：:We study the mechanisms that guide the formation and maintenance of the highly ordered actin-myosin cytoskeleton in striated muscle. The UNC-82 kinase of Caenorhabditis elegans is orthologous to mammalian kinases ARK5/NUAK1 and SNARK/NUAK2. UNC-82 localizes to the M-line, and is required for proper organization of thi...

journal_title：Genetics

authors： Schiller NR,Duchesneau CD,Lane LS,Reedy AR,Manzon ER,Hoppe PE

更新日期：2017-03-01 00:00:00

abstract：:The satellite DNA's from the embryos of five species of Drosophila (D. melanogaster, D. simulans, D. nasuta, D. virilis and D. hydei) have been analyzed for the presence of closed circular duplex DNA molecules, as determined by CsCl-EBr gradients. Circular DNA molecules were found in every species but D. melanogaster....

journal_title：Genetics

authors： Travaglini EC,Schultz J

更新日期：1972-11-01 00:00:00

abstract：:The heterotrimeric G protein Gq regulates neuronal activity through distinct downstream effector pathways. In addition to the canonical Gq effector phospholipase Cβ, the small GTPase Rho was recently identified as a conserved effector of Gq. To identify additional molecules important for Gq signaling in neurons, we pe...

journal_title：Genetics

authors： Coleman B,Topalidou I,Ailion M

更新日期：2018-06-01 00:00:00

abstract：:Whereas nonlinear relationships between genes are acknowledged, there exist only a few methods for estimating nonlinear gene coexpression networks or gene regulatory networks (GCNs/GRNs) with common deficiencies. These methods often consider only pairwise associations between genes, and are, therefore, poorly capable ...

journal_title：Genetics

authors： Kontio JAJ,Rinta-Aho MJ,Sillanpää MJ

更新日期：2020-07-01 00:00:00

abstract：:We examine the influence of nonrandom mating and immigration on the evolutionary dynamics of cytonuclear associations in hybrid zones. Recursion equations for allelic and genotypic cytonuclear disequilibria were generated under models of (1) migration alone, assuming hybrid zone matings are random with respect to cyto...

journal_title：Genetics

authors： Asmussen MA,Arnold J,Avise JC

更新日期：1989-08-01 00:00:00

abstract：:Four-cutter molecular polymorphism of Adh and P6, and chromosome inversion polymorphism of chromosome II were investigated in 95 isogenic lines of an Ivory Coast population of Drosophila melanogaster, a species assumed to have recently spread throughout the world from a West African origin. The P6 gene showed little l...

journal_title：Genetics

authors： Bénassi V,Aulard S,Mazeau S,Veuille M

更新日期：1993-07-01 00:00:00

abstract：:Meiotic recombination depends upon the tightly coordinated regulation of chromosome dynamics and is essential for the production of haploid gametes. Central to this process is the formation and repair of meiotic double-stranded breaks (DSBs), which must take place within the constraints of a specialized chromatin arch...

journal_title：Genetics

authors： Turcotte CA,Sloat SA,Rigothi JA,Rosenkranse E,Northrup AL,Andrews NP,Checchi PM

更新日期：2018-03-01 00:00:00

abstract：:The fission yeast DNA repair gene rad21+ is essential for cell growth. To investigate the function essential for cell proliferation, we have isolated a temperature-sensitive mutant of the rad21+ gene. The mutant, rad21-K1, showed abnormal mitosis at the nonpermissive temperature. Some cells contained abnormal nuclear ...

journal_title：Genetics

authors： Tatebayashi K,Kato J,Ikeda H

更新日期：1998-01-01 00:00:00

abstract：:This paper presents the results of a study of linkage disequilibrium between five polymorphic enzyme genes located on chromosome 3 of D. melanogaster. Three sets of chromosomes were examined: two represented samples from successive years of the same natural population, and one came from a large laboratory population. ...

journal_title：Genetics

authors： Charlesworth B,Charlesworth D

更新日期：1973-02-01 00:00:00

abstract：:To gain new mechanistic insight into ER homeostasis and the biogenesis of secretory proteins, we screened a genomewide collection of yeast mutants for defective intracellular retention of the ER chaperone, Kar2p. We identified 87 Kar2p-secreting strains, including a number of known components in secretory protein modi...

journal_title：Genetics

authors： Copic A,Dorrington M,Pagant S,Barry J,Lee MC,Singh I,Hartman JL 4th,Miller EA

更新日期：2009-07-01 00:00:00

abstract：:The genetic basis of stochastic variation within a defined environment, and the consequences of such micro-environmental variance for fitness are poorly understood . Using a multigenerational breeding design in Drosophila serrata, we demonstrated that the micro-environmental variance in a set of morphological wing tra...

journal_title：Genetics

authors： Sztepanacz JL,McGuigan K,Blows MW

更新日期：2017-08-01 00:00:00

abstract：:Inverted chromosome duplications or palindromes are linked with genetic disorders and malignant transformation. They are considered by-products of DNA double-strand break (DSB) repair: the homologous recombination (HR) and the nonhomologous end joining (NHEJ). Palindromes near chromosome ends are often triggered by te...

journal_title：Genetics

authors： Raykov V,Marvin ME,Louis EJ,Maringele L

更新日期：2016-08-01 00:00:00

abstract：:Two parental strains of laboratory mice, NZB and CBA/H, were chosen for their differences in attack behavior. NZB have higher scores than CBA/H. An effect of the Y chromosome on attack behavior was determined for two maternal environments. Each male was tested once in a dyadic encounter with an A/J male as a standard ...

journal_title：Genetics

authors： Carlier M,Roubertoux PL,Pastoret C

更新日期：1991-09-01 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：:Mathematical models are presented for the evolution of postmating and premating reproductive isolation. In the case of postmating isolation it is assumed that hybrid sterility or inviability is caused by incompatibility of alleles at one or two loci, and evolution of reproductive isolation occurs by random fixation of...

journal_title：Genetics

authors： Nei M,Maruyama T,Wu CI

更新日期：1983-03-01 00:00:00