Results 1 to 10 of about 41,993 (148)

Cytonuclear Genetic Incompatibilities in Plant Speciation [PDF]

open access: yesPlants, 2020
Due to the endosymbiotic origin of organelles, a pattern of coevolution and coadaptation between organellar and nuclear genomes is required for proper cell function.
Zoé Postel, Pascal Touzet
doaj   +4 more sources

Genetic Links between Recombination and Speciation. [PDF]

open access: yesPLoS Genetics, 2016
Meiosis distinguishes cells in the germ line from their somatic counterparts. Part of meiosis involves a bizarre series of events in which cells deliberately damage their DNA and then repair it. Of the many double-strand breaks that are generated, a minority are resolved as reciprocal exchanges between homologous chromosomes [1].
Bret A Payseur
doaj   +4 more sources

Mating system and speciation I: Accumulation of genetic incompatibilities in allopatry.

open access: yesPLoS Genetics, 2022
Self-fertilisation is widespread among hermaphroditic species across the tree of life. Selfing has many consequences on the genetic diversity and the evolutionary dynamics of populations, which may in turn affect macroevolutionary processes such as ...
Lucas Marie-Orleach   +2 more
doaj   +1 more source

Incipient Sympatric Speciation and Evolution of Soil Bacteria Revealed by Metagenomic and Structured Non-Coding RNAs Analysis

open access: yesBiology, 2022
Soil bacteria respond rapidly to changes in new environmental conditions. For adaptation to the new environment, they could mutate their genome, which impacts the alternation of the functional and regulatory landscape.
Sumit Mukherjee   +9 more
doaj   +1 more source

Genetics and ecological speciation [PDF]

open access: yesProceedings of the National Academy of Sciences, 2009
Species originate frequently by natural selection. A general mechanism by which this occurs is ecological speciation, defined as the evolution of reproductive isolation between populations as a result of ecologically-based divergent natural selection. The alternative mechanism is mutation-order speciation in which populations fix different mutations as
Dolph, Schluter, Gina L, Conte
openaire   +2 more sources

Incipient speciation between host-plant strains in the fall armyworm

open access: yesBMC Ecology and Evolution, 2022
Background Recent advancement in speciation biology proposes that genetic differentiation across the whole genome (genomic differentiation, GD) may occur at the beginning of a speciation process and that GD itself may accelerate the rate of speciation ...
Karine Durand   +2 more
doaj   +1 more source

Multilocus phylogeography and ecological niche modeling suggest speciation with gene flow between the two Bamboo Partridges

open access: yesAvian Research, 2021
Background Understanding how species diversify is a long-standing question in biology. The allopatric speciation model is a classic hypothesis to explain the speciation process. This model supposes that there is no gene flow during the divergence process
Pengcheng Wang   +8 more
doaj   +1 more source

Accumulation of gene copy number variations during the early phase of free‐spawning abalone speciation

open access: yesEcology and Evolution, 2023
The genetic basis of speciation in free‐spawning marine invertebrates is poorly understood. Although gene copy number variations (GCNVs) and nucleotide variations possibly trigger the speciation of these organisms, empirical evidence for such a ...
Shotaro Hirase   +3 more
doaj   +1 more source

Varying Intensities of Introgression Obscure Incipient Venom-Associated Speciation in the Timber Rattlesnake (Crotalus horridus)

open access: yesToxins, 2021
Ecologically divergent selection can lead to the evolution of reproductive isolation through the process of ecological speciation, but the balance of responsible evolutionary forces is often obscured by an inadequate assessment of demographic history and
Mark J. Margres   +6 more
doaj   +1 more source

The evolutionary genetics of speciation [PDF]

open access: yesPhilosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 1992
The last decade has brought renewed interest in the genetics of speciation, yielding a number of new models and empirical results. Defining speciation as ‘the origin of reproductive isolation between two taxa’, we review recent theoretical studies and relevant data, emphasizing the regular patterns seen among genetic analyses.
J A, Coyne, H A, Orr
openaire   +2 more sources

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