Chromosomal mapping of repetitive sequences in Hyphessobrycon eques (Characiformes, Characidae): a special case of the spreading of 5S rDNA clusters in a genome.

abstract：:Adaptation and reproductive isolation, the engines of biological diversity, are still elusive when discussing the genetic bases of speciation. Namely, the number of genes and magnitude of selection acting positively or negatively on genomic traits implicated in speciation is contentious. Here, we describe the first st...

journal_title：Genetica

authors： Rogers SM,Campbell D,Baird SJ,Danzmann RG,Bernatchez L

更新日期：2001-01-01 00:00:00

abstract：:The study of chromosomes in insects is a good tool in mitotic process analysis, zoographic localization and evolution investigation. Among them, the Sciaridae offers a karyotype with a small number of chromosomes, where the heterochromatin and nucleolar organizer region, NOR, are easily analyzed in metaphase chromosom...

journal_title：Genetica

authors： Gaspar VP,Borges AR,Fernandez MA

更新日期：2002-01-01 00:00:00

abstract：:We have conducted a structure and functional analysis of the hobo transposable element of Drosophila melanogaster. A minimum of 141 bp of the left (L) end and 65 bp of the right (R) end of the hobo were shown to contain sequences sufficient for transposition. Both ends of hobo contain multiple copies of the motifs GGG...

journal_title：Genetica

authors： Kim YJ,Hice RH,O'Brochta DA,Atkinson PW

更新日期：2011-08-01 00:00:00

abstract：:Montane forests provide the natural framework to test for various ecological settings at distinct elevations as they may affect population demography, which in turn will affect the spatial genetic structure (SGS). We analyzed the fine-scale SGS of Nothofagus pumilio, which dominates mountain areas of Patagonia, in thr...

journal_title：Genetica

authors： Mathiasen P,Premoli AC

更新日期：2013-03-01 00:00:00

abstract：:Evaluation of relative contribution of natural selection and stochastic processes to population differentiation has been of great interest in evolutionary biology. In a damselfly, Ischnura senegalensis, females show color dimorphism (gynochrome vs. androchrome), and color-morph frequencies are known to greatly vary am...

journal_title：Genetica

authors： Inomata N,Hironaka K,Sawada K,Kuriwada T,Yamahira K

更新日期：2015-06-01 00:00:00

abstract：:The heat shock 70 family of proteins is one of the most highly conserved among all species. The genes encoding these proteins have been cloned and sequenced from bacterial species to humans with a high degree of homology preserved throughout evolution. Here we describe the cloning and characterization of a cDNA encodi...

journal_title：Genetica

authors： Graser RT,Malnar-Dragojevic D,Vincek V

更新日期：1996-01-01 00:00:00

abstract：:We investigated the distribution of genetic variation within and between 10 fragmented populations of the saltmarsh beetle Pogonus chalceus in the region of Flanders (Belgium) representing all extant populations of the species in that region by using allozyme and microsatellite markers. Beetle population size and habi...

journal_title：Genetica

authors： Dhuyvetter H,Gaublomme E,Desender K

更新日期：2005-07-01 00:00:00

abstract：:Cotton (Gossypium spp.) plant growth is an important time-specific agronomic character that supports the development of squares, flowers, boll retention, and yield. With the use of a mixed linear model approach, we investigated 14 cotton chromosome substitution (CS-B) lines and their chromosome-specific F(2) hybrids f...

journal_title：Genetica

authors： Wu J,McCarty JC,Saha S,Jenkins JN,Hayes R

更新日期：2009-09-01 00:00:00

abstract：:Using deletion analysis of the Ac transposable element, we have shown that replacement of internal sequences from base pairs 181-3559 does not abolish transposition. We have done sequential deletion analysis of the 3'-end of the Ac element and found that deletion of the major transposase binding sites (AAACGG) abolish...

journal_title：Genetica

authors： Zhou JH,Myers A,Atherly AG

更新日期：1991-01-01 00:00:00

abstract：:Two naturally occurring nonautonomous mariner elements were tested in vivo for their ability to down-regulate excision of a target element in the presence of functional mariner transposase. The tested elements were the peach element isolated from Drosophila mauritiana, which encodes a transposase that differs from the...

journal_title：Genetica

authors： De Aguiar D,Hartl DL

更新日期：1999-01-01 00:00:00

abstract：:The torsional modulus C of DNA is determined from the difference between the work of stretching a single overwound molecule and the work done in stretching one underwound by the same number of turns. The value obtained C/kBT = 86 +/- 10 nm is within the range (75 +/- 25 nm) estimated by more indirect methods. ...

journal_title：Genetica

authors： Strick TR,Bensimon D,Croquette V

更新日期：1999-01-01 00:00:00

abstract：:Chromosomal polymorphism was assessed in the southern short-tailed shrew (Blarina carolinensis) using standard metaphase chromosome and G-banding techniques. Twenty-one animals (11 males, 10 females) from the Meeman Biological Station in Shelby Co., Tennessee, were examined for diploid number. Results showed diploid n...

journal_title：Genetica

authors： Elrod DA,Beck ML,Kennedy ML

更新日期：1996-10-01 00:00:00

abstract：:The recent sequencing of the complete genome of the peach offers new opportunities for further transcriptomic studies in Prunus species in the called post-genomics era. First works on transcriptome analysis in Prunus species started in the early 2000s with the development of ESTs (expressed sequence tags) and the anal...

journal_title：Genetica

authors： Martínez-Gómez P,Crisosto CH,Bonghi C,Rubio M

更新日期：2011-06-01 00:00:00

abstract：:Wild rice is a valuable resource for the genetic improvement of cultivated rice (Oryza sativa L., AA genome). Molecular markers are important tools for monitoring gene introgression from wild rice into cultivated rice. In this study, Simple sequence repeat (SSR) markers were used to analyze interspecific hybrids of O....

journal_title：Genetica

authors： Li G,Hu W,Qin R,Jin H,Tan G,Zhu L,He G

更新日期：2008-10-01 00:00:00

abstract：:Knowledge of population genetic structure and intrapopulation genetic variation is important for understanding population dynamics and evolutionary processes. Dendrobium nobile is an endangered traditional Chinese tonic medicine. In order to analyze the population differentiation and genetic diversity in D. nobile and...

journal_title：Genetica

authors： Yan W,Hou B,Xue Q,Geng L,Ding X

更新日期：2015-06-01 00:00:00

abstract：:Theoretical models suggest that population structure can interact with frequency dependent selection to affect fitness in such a way that adaptation is dependent not only on the genotype of an individual and the genotypes with which it co-occurs within populations (demes), but also the distribution of genotypes among ...

journal_title：Genetica

authors： Olson MS,McCauley DE,Taylor D

更新日期：2005-02-01 00:00:00

abstract：:The underlying relationship between functional variables and sequence evolutionary rates is often assessed by partial correlation analysis. However, this strategy is impeded by the difficulty of conducting meaningful statistical analysis using noisy biological data. A recent study suggested that the partial correlatio...

journal_title：Genetica

authors： Kim SH,Yi SV

更新日期：2007-10-01 00:00:00

abstract：:The level and pattern of genetic variation was analyzed in four species of the fern genus Adiantum L., A. hispidulum Sw., A. incisum Forrsk., A. raddianum C.Presl, and A. zollingeri Mett. ex Kuhn, originating from South India, using the ISSR fingerprinting method. The populations of Adiantum possessed a considerable l...

journal_title：Genetica

authors： Korpelainen H,de Britto J,Doublet J,Pravin S

更新日期：2005-11-01 00:00:00

abstract：:The aim of this work is to analyze the homogamy previously detected between two natural populations of Drosophila melanogaster from Brazzaville. It is shown that mating isolation was still maintained under laboratory conditions 10 years after the populations samples were trapped. Isolation seemed to be due mainly to p...

journal_title：Genetica

authors： Haerty W,Jallon JM,Rouault J,Bazin C,Capy P

更新日期：2002-11-01 00:00:00

abstract：:The genera Nothoscordum and Ipheion (Allioideae, Amaryllidaceae) are cytologically characterized by a dysploid series with variable numbers of metacentric and acrocentric chromosomes typical of karyotypes rearranged by Robertsonian translocations (RT). Since they have large chromosomes, low diploid numbers, and posses...

journal_title：Genetica

authors： Souza G,Vanzela AL,Crosa O,Guerra M

更新日期：2016-04-01 00:00:00

abstract：:The Bovidae X-chromosome shows a considerable variation, in contrast to the preservative autosomal conservatism. The X-chromosome variation is mostly a consequence of the constitutive heterochromatin (CH) variation; in what respect to its amount and position. This is especially common among the non-Bovinae subfamilies...

journal_title：Genetica

authors： Chaves R,Santos S,Guedes-Pinto H

更新日期：2004-07-01 00:00:00

abstract：:The results of molecular genetics have frequently been difficult to explain by conventional evolutionary theory. New findings about the genetic conservation of protein structure and function across very broad taxonomic boundaries, the mosaic structure of genomes and genetic loci, and the molecular mechanisms of geneti...

journal_title：Genetica

authors： Shapiro JA

更新日期：1992-01-01 00:00:00

abstract：:Improvements in the usefulness of QTL analysis arise from better statistical methods applied to the problem, ability to analyze more complex mating designs, and the fitting of less simplified genetic models. Here we review the advantages of different plant mating designs in QTL analysis and conclude that diallel desig...

journal_title：Genetica

authors： Jannink JL,Moreau L,Charmet G,Charcosset A

更新日期：2009-06-01 00:00:00

abstract：:Like organisms from all other walks of life, bacteria are capable of sexual recombination. However, unlike most plants and animals, bacteria recombine only rarely, and when they do they are extremely promiscuous in their choice of sexual partners. There may be no absolute constraints on the evolutionary distances that...

journal_title：Genetica

authors： Cohan FM

更新日期：2002-11-01 00:00:00

abstract：:The greater amberjack (Seriola dumerili) is a commercially and recreationally important marine fish species in the southeastern United States, where it has been historically managed as two non-mixing stocks (Gulf of Mexico and Atlantic). Mark-recapture studies and analysis of mitochondrial DNA have suggested the two s...

journal_title：Genetica

authors： Hargrove JS,Murie DJ,Parkyn DC,Saarinen EV,Austin JD

更新日期：2018-10-01 00:00:00

abstract：:Mitochondrial DNA (mtDNA) sequences remain the most widely used for phylogenetic analysis in birds. A major limitation of mtDNA sequences, however, is that mitochondria genes are inherited as a single linkage group. Here we describe the use of a 540-bp DNA sequence corresponding to the G3 domain of Gallus gallus nucle...

journal_title：Genetica

authors： Smith EJ,Shi L,Tu Z

更新日期：2005-05-01 00:00:00

abstract：:The small heat shock proteins (sHSPs) are a ubiquitous family of molecular chaperones. We have identified 18 sHSPs in the Caenorhabditis elegans genome and 20 sHSPs in the Caenorhabditis briggsae genome. Analysis of phylogenetic relationships and evolutionary dynamics of the sHSPs in these two genomes reveals a very c...

journal_title：Genetica

authors： Aevermann BD,Waters ER

更新日期：2008-07-01 00:00:00

abstract：:Genes found to affect male courtship song characters in Drosophila melanogaster are good candidates when tracing genes responsible for species-specific songs in other Drosophila species. It has previously been shown that Thr-Gly repeat length variation at the period gene affects song traits in D. melanogaster, which g...

journal_title：Genetica

authors： Huttunen S,Vieira J,Hoikkala A

更新日期：2002-06-01 00:00:00

abstract：:The second chromosome inversion In (2L+2R) Cy in a heterozygous condition was studied for its effect on frequency and interference of crossing over in three different regions of the X chromosome of Drosophila melanogaster. A significant increase in crossing over frequency was observed in the proximal and distal region...

journal_title：Genetica

authors： Portin P,Rantanen M

更新日期：1990-01-01 00:00:00

abstract：:Taxa considered under low International Union for the Conservation of Nature categories of extinction risk often represent cases of concern to conservation biology. Their high relative abundance precludes management of the entire range due to limited economical resources. Therefore, they require a cost-effective manag...

journal_title：Genetica

authors： Segarra-Moragues JG,Catalán P

更新日期：2010-03-01 00:00:00