Evolutionary implications of the relationship between genome size and body size in flatworms and copepods.

abstract：:We have studied in Drosophila melanogaster the effects of allozyme variation at the alpha Gpdh and Adh loci on the following fitness components: female fecundity, egg hatchability, egg-to-adult survival under near-optimal and competitive conditions, rate of development under near-optimal and competitive conditions, an...

journal_title：Heredity

authors： Izquierdo JI,Rubio J

更新日期：1989-12-01 00:00:00

abstract：:Mate choice behaviors are among the most important reproductive isolating barriers in many animals. Little is known about the genetic basis of reproductively isolating behaviors, but examples to date provide evidence that they can have a simple genetic basis. However, it is unclear if these results indicate that indiv...

journal_title：Heredity

authors： Shahandeh MP,Turner TL

更新日期：2020-06-01 00:00:00

abstract：:Understanding how geographical and environmental features affect genetic variation at both the population and individual levels is crucial in biology, especially in the case of pathogens. However, distinguishing between these factors and the effects of historical range expansion on spatial genetic structure remains ch...

journal_title：Heredity

authors： Rieux A,De Lapeyre De Bellaire L,Zapater MF,Ravigne V,Carlier J

更新日期：2013-01-01 00:00:00

abstract：:Drosophila mauritiana larvae are tolerant to ethanol as a supplementary nutritional resource at low concentrations. Higher levels of ethanol (5 per cent) in the food adversely affect larval behaviour causing reduced rates of locomotion and feeding which are associated with low larva-to-adult survival. Two codominant a...

journal_title：Heredity

authors： Muhammad-Ali AZ,Burnet B

更新日期：1995-04-01 00:00:00

abstract：:The theory, construction and optimization of a model of chromosome pairing in triploid hybrids are re-examined and the model reconstructed. A new approach to optimization is described that removes a bias in the estimation of x, the measure of relative affinity, by weighting the observed and calculated meiotic figure f...

journal_title：Heredity

authors： Chapman CGD,Kimber G

更新日期：1992-02-01 00:00:00

abstract：:Pedunculate oak and sessile oak are two sympatric interfertile species that exhibit leaf morphological differences. We aimed to detect quantitative trait loci (QTLs) of these traits in order to locate genomic regions involved in species differentiation. A total of 15 leaf morphological traits were assessed in a mixed ...

journal_title：Heredity

authors： Saintagne C,Bodénès C,Barreneche T,Pot D,Plomion C,Kremer A

更新日期：2004-01-01 00:00:00

abstract：:Distinguishing genetically differentiated populations within hybrid zones and determining the mechanisms by which introgression occurs are crucial for setting effective conservation policy. Extensive hybridization among grey wolves (Canis lupus), eastern wolves (C. lycaon) and coyotes (C. latrans) in eastern North Ame...

journal_title：Heredity

authors： Rutledge LY,Garroway CJ,Loveless KM,Patterson BR

更新日期：2010-12-01 00:00:00

abstract：:Sex ratio theory attempts to explain variation at all levels (species, population, individual, brood) in the proportion of offspring that are male (the sex ratio). In many cases this work has been extremely successful, providing qualitative and even quantitative explanations of sex ratio variation. However, this is no...

journal_title：Heredity

authors： West SA,Reece SE,Sheldon BC

更新日期：2002-02-01 00:00:00

abstract：:The frequency of B chromosomes has been determined for several stages in the grasshopper life-cycle, over three generations, in three natural populations spanning a steep cline in East Anglia. This has revealed a rise in B frequency in prediapause eggs, a fall during the winter in the embryos and a rise in the early n...

journal_title：Heredity

authors： Robinson PM,Hewitt GM

更新日期：1976-06-01 00:00:00

abstract：:Crop modelling has so far contributed little to the genetic analysis of a quantitative trait. This study illustrates how a simple model for crop phenological development, which assumes that crop development rate is affected by daily effective temperature, can assist the identification of Quantitative Trait Loci (QTLs)...

journal_title：Heredity

authors： Yin X,Kropff MJ,Stam P

更新日期：1999-04-01 00:00:00

abstract：:The coefficient of variation of estimates of three genetic distances (standard genetic distance of Nei, chord distance, FST) was examined with computer simulation to determine if large samples (per population) are necessary to precisely estimate genetic distances at loci with high levels of polymorphism. These simulat...

journal_title：Heredity

authors： Kalinowski ST

更新日期：2005-01-01 00:00:00

abstract：:Hybridization between crops and their weedy or wild relatives is an area of concern because the widespread use of genetically engineered crops may allow novel, beneficial transgenes to enter nearby populations. We compared fitness components of wild Cucurbita pepo from Arkansas, USA, with wild-crop hybrids derived fro...

journal_title：Heredity

authors： Spencer LJ,Snow AA

更新日期：2001-06-01 00:00:00

abstract：:Genetic effects of habitat fragmentation may be undetectable because they are generally a recent event in evolutionary time or because of confounding effects such as historical bottlenecks and historical changes in species' distribution. To assess the effects of demographic history on the genetic diversity and populat...

journal_title：Heredity

authors： Collevatti RG,Telles MP,Nabout JC,Chaves LJ,Soares TN

更新日期：2013-08-01 00:00:00

abstract：:Volunteers deriving from unharvested seeds of a crop can lead to persistent feral populations and participate in genetic exchanges across the agro-ecosystem, both between crop varieties and between crops and their wild relatives. A first step to understand the importance of volunteers is to characterize their capacity...

journal_title：Heredity

authors： Ostrowski MF,Rousselle Y,Tsitrone A,Santoni S,David J,Reboud X,Muller MH

更新日期：2010-10-01 00:00:00

abstract：:The availability of whole genome sequencing (WGS) data enables the discovery of causative single nucleotide polymorphisms (SNPs) or SNPs in high linkage disequilibrium with causative SNPs. This study investigated effects of integrating SNPs selected from imputed WGS data into the data of 54K chip on genomic prediction...

journal_title：Heredity

authors： Liu A,Lund MS,Boichard D,Karaman E,Fritz S,Aamand GP,Nielsen US,Wang Y,Su G

更新日期：2020-01-01 00:00:00

abstract：:We have developed a new model for mating system analysis, which attempts to distinguish among alternative modes of self-oriented mating within populations. This model jointly estimates the rates of outcrossing, selfing, automixis and apomixis, through the use of information in the family structure given by dominant ge...

journal_title：Heredity

authors： Thompson SL,Ritland K

更新日期：2006-08-01 00:00:00

abstract：:Variations observed in parasite virulence and host resistance may be the outcome of coevolutionary processes. Recent theoretical developments have led to a 'geographic mosaic theory' of coevolution according to which there are some localities where reciprocal selection occurs (hot spots) and others where it is strongl...

journal_title：Heredity

authors： Dupas S,Carton Y,Poiriè M

更新日期：2003-01-01 00:00:00

abstract：:Allele frequency differences between sexes and an excess of heterozygotes in males had suggested that the PEPB-1 locus is sex-linked in chinook salmon (Oncorhynchus tshawytscha). We here estimate less than 1% recombination between PEPB-1 and a growth hormone pseudogene known to be in the sex-determining region (SEX) i...

journal_title：Heredity

authors： Marshall AR,Knudsen KL,Allendorf FW

更新日期：2004-07-01 00:00:00

abstract：:Effective population size over a generation (Ne) or over a reproductive cycle (Nb) and the adult census size (Nc) are important parameters in both conservation and evolutionary biology. Ne provides information regarding the rate of loss of genetic diversity and can be tracked back in time to infer demographic history ...

journal_title：Heredity

authors： Ferchaud AL,Perrier C,April J,Hernandez C,Dionne M,Bernatchez L

更新日期：2016-10-01 00:00:00

abstract：:Determining the mechanisms responsible for the distribution of genetic diversity in natural populations has occupied a central role in molecular evolution. Our study was motivated by the unprecedented observation that a widespread Eurasian flycatcher, Ficedula albicilla, exhibited no variation at the mitochondrial DNA...

journal_title：Heredity

authors： Hung CM,Zink RM

更新日期：2014-07-01 00:00:00

abstract：:The frequency of individuals resistant to two acetolactate synthase (ALS)-inhibiting herbicides in three previously untreated populations of Lolium rigidum was determined. The frequency of individuals resistant to the sulfonylurea herbicide sulfometuron-methyl varied from 2.2 x 10(-5) to 1.2 x 10(-4) and the frequency...

journal_title：Heredity

authors： Preston C,Powles SB

更新日期：2002-01-01 00:00:00

abstract：:Whether or not evolution by natural selection is predictable depends on the existence of general patterns shaping the way mutations interact with the genetic background. This interaction, also known as epistasis, has been observed during adaptation (macroscopic epistasis) and in individual mutations (microscopic epist...

journal_title：Heredity

authors： Passagem-Santos D,Zacarias S,Perfeito L

更新日期：2018-11-01 00:00:00

abstract：:Galton's ancestral law states that the two parent contribute between them on average one-half of the total heritage of the offspring, the four grandparents one-quarter, and so on. He interpreted this law both as a representation of the separate contributions of each ancestor to the heritage of the offspring and as a m...

journal_title：Heredity

authors： Bulmer M

更新日期：1998-11-01 00:00:00

abstract：:Our understanding of the distribution of worldwide human genomic diversity has greatly increased over recent years thanks to the availability of large data sets derived from short tandem repeats (STRs), insertion deletion polymorphisms (indels) and single nucleotide polymorphisms (SNPs). A concern, however, is that th...

journal_title：Heredity

authors： Romero IG,Manica A,Goudet J,Handley LL,Balloux F

更新日期：2009-02-01 00:00:00

abstract：:The sibling species Anopheles atroparvus and Anopheles labranchiae are cytogenetically almost indistinguishable. The chromosome complement (2n = 6) consists of two pairs of autosomes and two heteromorphic sex chromosomes with largely homologous heterochromatic long arms. Treatment of chromosome preparations with the r...

journal_title：Heredity

authors： Marchi A,Mezzanotte R

更新日期：1990-08-01 00:00:00

abstract：:Knowledge of the mechanism underlying the expression of melanin-based sex-traits may help us to understand their signalling function. Potential sources of inter-individual variation are the total amount of melanins produced but also how biochemical precursors are allocated into the eumelanin and phaeomelanin pigments ...

journal_title：Heredity

authors： Roulin A,Dijkstra C

更新日期：2003-05-01 00:00:00

abstract：:At treeline, selection by harsh environmental conditions sets an upward limit to arboreal vegetation. Increasing temperatures and the decline of traditional animal raising have favoured an upward shift of treeline in the last decades. These circumstances create a unique opportunity to study the balance of the main for...

journal_title：Heredity

authors： Piotti A,Leonardi S,Piovani P,Scalfi M,Menozzi P

更新日期：2009-08-01 00:00:00

abstract：:Co-evolution of fungal pathogens with their host species during the domestication of modern crop varieties has likely affected the current genetic divergence of pathogen populations. The objective of this study was to determine if the evolutionary history of the obligate rust pathogen on wheat, Puccinia triticina, is ...

journal_title：Heredity

authors： Liu M,Rodrigue N,Kolmer J

更新日期：2014-04-01 00:00:00

abstract：:Segregation distortion is the phenomenon whereby the observed genotypic frequencies of a locus fall outside the expected Mendelian segregation ratio, and it is increasingly recognised as a potentially powerful evolutionary force. The main reason for segregation distortion is a difference in the viability of gametes an...

journal_title：Heredity

authors： Tang ZX,Wang XF,Zhang MZ,Zhang YH,Deng DX,Xu CW

更新日期：2013-04-01 00:00:00

abstract：:Evolution of the rDNA spacer, ITS 2, is examined by comparing 17 DNA sequences of the ticks, Ixodes scapularis and I. pacificus. The distribution of fixed interspecific differences and the relative frequency of base changes vs. insertions/deletions (indels) matches the distribution and relative frequency for intraspec...

journal_title：Heredity

authors： McLain DK,Wesson DM,Collins FH,Oliver JH Jr

更新日期：1995-09-01 00:00:00