Results 31 to 40 of about 28,354 (248)

rRNA Pseudogenes in Filamentous Ascomycetes as Revealed by Genome Data

open access: yesG3: Genes, Genomes, Genetics, 2017
The nuclear ribosomal DNA (rDNA) is considered as a paradigm of concerted evolution. Components of the rDNA tandem repeats (45S) are widely used in phylogenetic studies of different organisms and the internal transcribed spacer (ITS) region was recently ...
Yi Li   +5 more
doaj   +1 more source

The evolution of hexapod engrailed-family genes: evidence for conservation and concerted evolution [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2006
Phylogenetic analyses imply that multiple engrailed-family gene duplications occurred during hexapod evolution, a view supported by previous reports of only a single engrailed-family gene in members of the grasshopper genusSchistocercaand in the beetleTribolium castaneum.
Andrew D, Peel   +2 more
openaire   +2 more sources

Organization and evolution of hsp70 clusters strikingly differ in two species of Stratiomyidae (Diptera) inhabiting thermally contrasting environments

open access: yesBMC Evolutionary Biology, 2011
Background Previously, we described the heat shock response in dipteran species belonging to the family Stratiomyidae that develop in thermally and chemically contrasting habitats including highly aggressive ones.
Bettencourt Brian R   +5 more
doaj   +1 more source

Genomic Differences Between the Sexes in a Fish Species Seen Through Satellite DNAs

open access: yesFrontiers in Genetics, 2021
Neotropical fishes have highly diversified karyotypic and genomic characteristics and present many diverse sex chromosome systems, with various degrees of sex chromosome differentiation. Knowledge on their sex-specific composition and evolution, however,
Carolina Crepaldi   +4 more
doaj   +1 more source

Copy Correction and Concerted Evolution in the Conservation of Yeast Genes [PDF]

open access: yesGenetics, 2005
Abstract The yeast Saccharomyces cerevisiae and other members of the genus Saccharomyces are descendants of an ancient whole-genome duplication event. Although most of the duplicate genes have since been deleted, many remain, and so there are many pairs of related genes.
Saumyadipta, Pyne   +2 more
openaire   +2 more sources

Intragenomic variation in the second internal transcribed spacer of the ribosomal DNA of species of the genera Culex and Lutzia (Diptera: Culicidae)

open access: yesMemorias do Instituto Oswaldo Cruz, 2011
Culex is the largest genus of Culicini and includes vectors of several arboviruses and filarial worms. Many species of Culex are morphologically similar, which makes their identification difficult, particularly when using female specimens.
Fabiana Tavares Vesgueiro   +4 more
doaj   +1 more source

Concerted Evolution: Molecular Mechanism and Biological Implications [PDF]

open access: yesThe American Journal of Human Genetics, 1999
A surprisingly large fraction of the eukaryotic genome is repetitive. More than one third of the human genome consists of interspersed repetitive DNA, and tandemly repeated DNA sequences may occupy as much as 10% of the human genome. The majority of the repetitive sequences are nongenic; the rest encode multigene families.
openaire   +2 more sources

The Evolutionary Rate of Duplicated Genes Under Concerted Evolution [PDF]

open access: yesGenetics, 2008
Abstract The effect of directional selection on the fixation process of a single mutation that spreads in a multigene family by gene conversion is investigated. A simple two-locus model with two alleles, A and a, is first considered in a random-mating diploid population with size N.
Shuhei, Mano, Hideki, Innan
openaire   +2 more sources

The B Chromosomes of Prochilodus lineatus (Teleostei, Characiformes) Are Highly Enriched in Satellite DNAs

open access: yesCells, 2021
B or supernumerary chromosomes are dispensable elements that are widely present in numerous eukaryotes. Due to their non-recombining nature, there is an evident tendency for repetitive DNA accumulation in these elements.
José Henrique Forte Stornioli   +9 more
doaj   +1 more source

Identifying concerted evolution and gene conversion in mammalian gene pairs lasting over 100 million years

open access: yesBMC Evolutionary Biology, 2009
Background Concerted evolution occurs in multigene families and is characterized by stretches of homogeneity and higher sequence similarity between paralogues than between orthologues.
Scherer Stephen W, Carson Andrew R
doaj   +1 more source

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