The number of alleles at a microsatellite defines the allele frequency spectrum and facilitates fast accurate estimation of theta.

abstract：:The distribution of fitness effects of mutations is a factor of fundamental importance in evolutionary biology. We determined the distribution of fitness effects of 510 mutants that each carried between 1 and 10 mutations (synonymous and nonsynonymous) in the hisA gene, encoding an essential enzyme in the l-histidine ...

journal_title：Molecular biology and evolution

authors： Lundin E,Tang PC,Guy L,Näsvall J,Andersson DI

更新日期：2018-03-01 00:00:00

abstract：:We present a method for pairwise Assessment of Nonfunctionalization Times (pANT) in processed pseudogenes. Contrary to existing methods for estimating nonfunctionalization times, pANT utilizes previously calculated probabilities of nucleotide substitution as explicit rate measurements, rather than assume that the subs...

journal_title：Molecular biology and evolution

authors： Fleishman SJ,Dagan T,Graur D

更新日期：2003-11-01 00:00:00

abstract：:It is well known that knocking out a gene in an organism often causes no phenotypic effect. One possible explanation is the existence of duplicate genes; that is, the effect of knocking out a gene is compensated by a duplicate copy. Another explanation is the existence of alternative pathways. In terms of metabolic pr...

journal_title：Molecular biology and evolution

authors： Hanada K,Sawada Y,Kuromori T,Klausnitzer R,Saito K,Toyoda T,Shinozaki K,Li WH,Hirai MY

更新日期：2011-01-01 00:00:00

abstract：:Influenza A viruses from wild aquatic birds, their natural reservoir species, are thought to have reached a form of stasis, characterized by low rates of evolutionary change. We tested this hypothesis by estimating rates of nucleotide substitution in a diverse array of avian influenza viruses (AIV) and allowing for ra...

journal_title：Molecular biology and evolution

authors： Chen R,Holmes EC

更新日期：2006-12-01 00:00:00

abstract：:Deletion rates are thought to be important factors in determining the genome size of organisms in nature. Although it is indisputable that deletions, and thus deletion rates, affect genome size, it is unclear how, or indeed if, genome size is regulated via the deletion rate. Here, we employ a mathematical model to det...

journal_title：Molecular biology and evolution

authors： Pettersson ME,Kurland CG,Berg OG

更新日期：2009-06-01 00:00:00

abstract：:A simple model for the evolution of the rate of molecular evolution is presented. With a Bayesian approach, this model can serve as the basis for estimating dates of important evolutionary events even in the absence of the assumption of constant rates among evolutionary lineages. The method can be used in conjunction ...

journal_title：Molecular biology and evolution

authors： Thorne JL,Kishino H,Painter IS

更新日期：1998-12-01 00:00:00

abstract：:We describe a method to establish chronologies of ancient ribosomal evolution. The method uses structure-based and sequence-based comparison of the large subunits (LSUs) of Haloarcula marismortui and Thermus thermophilus. These are the highest resolution ribosome structures available and represent disparate regions of...

journal_title：Molecular biology and evolution

authors： Hsiao C,Mohan S,Kalahar BK,Williams LD

更新日期：2009-11-01 00:00:00

abstract：:Blooms that are formed by cyanobacteria consist of toxic and nontoxic strains. The mechanisms that result in the occurrence of nontoxic strains are enigmatic. All the nontoxic strains of the filamentous cyanobacterium Planktothrix that were isolated from 9 European countries were found to have lost 90% of a large micr...

journal_title：Molecular biology and evolution

authors： Christiansen G,Molitor C,Philmus B,Kurmayer R

更新日期：2008-08-01 00:00:00

abstract：:High-affinity antibodies arise within weeks of infection from the evolution of B-cell receptors under selection to improve antigen recognition. This rapid adaptation is enabled by the distribution of highly mutable "hotspot" motifs in B-cell receptor genes. High mutability in antigen-binding regions (complementarity d...

journal_title：Molecular biology and evolution

authors： Vieira MC,Zinder D,Cobey S

更新日期：2018-05-01 00:00:00

abstract：:At present there is tremendous interest in characterizing the magnitude and distribution of linkage disequilibrium (LD) throughout the human genome, which will provide the necessary foundation for genome-wide LD analyses and facilitate detailed evolutionary studies. To this end, a human high-density single-nucleotide ...

journal_title：Molecular biology and evolution

authors： Akey JM,Zhang K,Xiong M,Jin L

更新日期：2003-02-01 00:00:00

abstract：:In numerous species, individual dispersal is restricted in space so that "continuous" populations evolve under isolation by distance. A method based on individual genotypes assuming a lattice population model was recently developed to estimate the product Dsigma2, where D is the population density and sigma2 is the av...

journal_title：Molecular biology and evolution

authors： Leblois R,Estoup A,Rousset F

更新日期：2003-04-01 00:00:00

abstract：:The authors of a recent manuscript in "Nature" claim to have discovered "universal trends" of amino acid gain and loss in protein evolution. Here, we show that this universal trend can be simply explained by a bias that is unavoidable with the 3-taxon trees used in the original analysis. We demonstrate that a rigorous...

journal_title：Molecular biology and evolution

authors： Goldstein RA,Pollock DD

更新日期：2006-07-01 00:00:00

abstract：:Identification of recently gained spliceosomal introns would provide crucial evidence in the continuing debate concerning the age and evolutionary significance of introns. A previously published genomic analysis reported to have identified 122 introns that had been gained since the divergence of the nematodes Caenorha...

journal_title：Molecular biology and evolution

authors： Roy SW,Penny D

更新日期：2006-12-01 00:00:00

abstract：:Gene expression changes contribute to complex trait variations in both individuals and populations. However, the evolution of gene expression underlying complex traits over macroevolutionary timescales remains poorly understood. Snake venoms are proteinaceous cocktails where the expression of each toxin can be quantif...

journal_title：Molecular biology and evolution

authors： Barua A,Mikheyev AS

更新日期：2019-09-01 00:00:00

abstract：:MADS-box genes encode a family of transcription factors which control diverse developmental processes in flowering plants ranging from root development to flower and fruit development. Through phylogeny reconstructions, most of these genes can be subdivided into defined monophyletic gene clades whose members share sim...

journal_title：Molecular biology and evolution

authors： Becker A,Winter KU,Meyer B,Saedler H,Theissen G

更新日期：2000-10-01 00:00:00

abstract：:A correspondence analysis of codon usage in Xenopus laevis revealed that the first axis is strongly correlated with the base composition at third codon positions. The second axis discriminates between putatively highly expressed genes and the other coding sequences, with expression levels being confirmed by the analys...

journal_title：Molecular biology and evolution

authors： Musto H,Cruveiller S,D'Onofrio G,Romero H,Bernardi G

更新日期：2001-09-01 00:00:00

abstract：:Interbreeding between hatchery-reared and wild fish, through deliberate stocking or escapes from fish farms, can result in rapid phenotypic and gene expression changes in hybrids, but the underlying mechanisms are unknown. We assessed if one generation of captive breeding was sufficient to generate inter- and/or trans...

journal_title：Molecular biology and evolution

authors： Rodriguez Barreto D,Garcia de Leaniz C,Verspoor E,Sobolewska H,Coulson M,Consuegra S

更新日期：2019-10-01 00:00:00

abstract：:Large phylogenomics data sets require fast tree inference methods, especially for maximum-likelihood (ML) phylogenies. Fast programs exist, but due to inherent heuristics to find optimal trees, it is not clear whether the best tree is found. Thus, there is need for additional approaches that employ different search st...

journal_title：Molecular biology and evolution

authors： Nguyen LT,Schmidt HA,von Haeseler A,Minh BQ

更新日期：2015-01-01 00:00:00

abstract：:This study aims to unravel the biogeography of a model symbiont/host system by exploiting the prediction that a symbiont will leave a signature of infection on the host. Specifically, a global sample of 1,442 Drosophila simulans from 33 countries and 64 sampling localities was employed to infer the phylogeography of t...

journal_title：Molecular biology and evolution

authors： Ballard JW

更新日期：2004-03-01 00:00:00

abstract：:Single-copy nuclear DNAs (scnDNAs) of eight species of arvicoline and six species of murine rodents were compared using DNA-DNA hybridization. The branching pattern derived from the DNA comparisons is congruent with the fossil evidence and supported by comparative biochemical, chromosomal, and morphological studies. T...

journal_title：Molecular biology and evolution

authors： Catzeflis FM,Sheldon FH,Ahlquist JE,Sibley CG

更新日期：1987-05-01 00:00:00

abstract：:Lethality in hybrids between Drosophila melanogaster and its sibling species Drosophila simulans is caused in part by the interaction of the genes Hybrid male rescue (Hmr) and Lethal hybrid rescue (Lhr). Hmr and Lhr have diverged under positive selection in the hybridizing species. Here we test whether positive select...

journal_title：Molecular biology and evolution

authors： Maheshwari S,Wang J,Barbash DA

更新日期：2008-11-01 00:00:00

abstract：:Previous studies have shown that genes that are expressed predominantly or exclusively in males tend to evolve rapidly in comparison to other genes. In most cases, however, it is unknown whether this rapid evolution is the result of increased positive (or sexual) selection on male-expressed traits or if it is due to a...

journal_title：Molecular biology and evolution

authors： Zhang Z,Parsch J

更新日期：2005-10-01 00:00:00

abstract：:Whole genome duplications (WGDs) have been hypothesized to be responsible for major transitions in evolution. However, the effects of WGD and subsequent gene loss on cellular behavior and metabolism are still poorly understood. Here we develop a genome scale evolutionary model to study the dynamics of gene loss and me...

journal_title：Molecular biology and evolution

authors： van Hoek MJ,Hogeweg P

更新日期：2009-11-01 00:00:00

abstract：:The level of DNA polymorphism in the ancestral species at the time of speciation can be estimated using DNA sequences from many loci sampled from 2 or more extant species. The comparison between ancestral and extant polymorphism can be informative about the population genetics of speciation. In this study, we collecte...

journal_title：Molecular biology and evolution

authors： Zhou R,Zeng K,Wu W,Chen X,Yang Z,Shi S,Wu CI

更新日期：2007-12-01 00:00:00

abstract：:We report the genomic organization and deduced protein sequence of a cephalochordate member of the Otx homeobox gene family (AmphiOtx) and show its probable single-copy state in the genome. We also present molecular phylogenetic analysis indicating that there was single ancestral Otx gene in the first chordates which ...

journal_title：Molecular biology and evolution

authors： Williams NA,Holland PW

更新日期：1998-05-01 00:00:00

abstract：:Selenocysteine (Sec) is the 21st amino acid in the genetic code, inserted in response to UGA codons with the help of RNA structures, the SEC Insertion Sequence (SECIS) elements. The three domains of life feature distinct strategies for Sec insertion in proteins and its utilization. While bacteria and archaea possess s...

journal_title：Molecular biology and evolution

authors： Mariotti M,Lobanov AV,Manta B,Santesmasses D,Bofill A,Guigó R,Gabaldón T,Gladyshev VN

更新日期：2016-09-01 00:00:00

abstract：:Eutrema salsugineum and Schrenkiella parvula are salt-tolerant relatives of the salt-sensitive species Arabidopsis thaliana. An important component of salt tolerance is the regulation of Na(+) ion homeostasis, which occurs in part through proteins encoded by the Cation/Proton Antiporter-1 (CPA1) gene family. We used a...

journal_title：Molecular biology and evolution

authors： Jarvis DE,Ryu CH,Beilstein MA,Schumaker KS

更新日期：2014-08-01 00:00:00

abstract：:A parsimony analysis was performed on restriction sites at the Hba-ps4 pseudogene locus within one of four inversions associated with mouse t haplotypes. The results suggest that all t haplotypes form a monophyletic group and that the in (17)4 inversion originated before the radiation of the Mus musculus species compl...

journal_title：Molecular biology and evolution

authors： Hammer MF,Silver LM

更新日期：1993-09-01 00:00:00

abstract：:The shikimate dehydrogenases (SDH) represent a widely distributed enzyme family with an essential role in secondary metabolism. This superfamily had been previously subdivided into 4 enzyme groups (AroE, YdiB, SdhL, and RifI), which show clear biochemical and functional differences ranging from amino acid biosynthesis...

journal_title：Molecular biology and evolution

authors： Singh S,Stavrinides J,Christendat D,Guttman DS

更新日期：2008-10-01 00:00:00

abstract：:Signaling peptides enable communication between cells, both within and between individuals, and are therefore key to the control of complex physiological and behavioral responses. Since their small sizes prevent direct transmission to secretory pathways, these peptides are often produced as part of a larger polyprotei...

journal_title：Molecular biology and evolution

authors： Rogers DW,McConnell E,Miller EL,Greig D

更新日期：2017-12-01 00:00:00