Results 31 to 40 of about 26,864 (246)

100 million years of multigene family evolution: origin and evolution of the avian MHC class IIB

open access: yesBMC Genomics, 2017
Background Gene duplication has led to a most remarkable adaptation involved in vertebrates’ host-pathogen arms-race, the major histocompatibility complex (MHC).
Julien Goebel   +8 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

The draft genome of Actinia tenebrosa reveals insights into toxin evolution

open access: yesEcology and Evolution, 2019
Sea anemones have a wide array of toxic compounds (peptide toxins found in their venom) which have potential uses as therapeutics. To date, the majority of studies characterizing toxins in sea anemones have been restricted to species from the superfamily,
Joachim M. Surm   +4 more
doaj   +1 more source

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

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

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

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.
Mano S, Innan H.
europepmc   +4 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

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

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

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