Results 41 to 50 of about 63,195 (262)
Speciation Along Environmental Gradients [PDF]
, 2002 Traditional discussions of speciation are based on geographical patterns of species ranges. In allopatric speciation, long-term geographical isolation generates reproductively isolated and spatially segregated descendant species.
AS Kondrashov +30 more
core +1 more source
Allopolyploid Speciation Accompanied by Gene Flow in a Tree Fern
Molecular Biology and Evolution, 2020 AbstractHybridization in plants may result in hybrid speciation or introgression and, thus, is now widely understood to be an important mechanism of species diversity on an evolutionary timescale. Hybridization is particularly common in ferns, as is polyploidy, which often results from hybrid crosses.
Jing Wang +5 more
openaire +2 more sources
Single-gene speciation: Mating and gene flow between mirror-image snails [PDF]
Evolution Letters, 2017 AbstractVariation in the shell coiling, or chirality, of land snails provides an opportunity to investigate the potential for “single-gene” speciation, because mating between individuals of opposite chirality is believed not possible if the snails mate in a face-to-face position.
Richards, Paul M. +5 more
openaire +3 more sources
The genetic architecture underlying the evolution of a rare piscivorous life history form in brown trout after secondary contact and strong introgression [PDF]
, 2018 Identifying the genetic basis underlying phenotypic divergence and reproductive isolation is a longstanding problem in evolutionary biology. Genetic signals of adaptation and reproductive isolation are often confounded by a wide range of factors, such as
Adams, Colin E. +4 more
core +2 more sources
PLoS Genetics, 2018 Speciation is a continuous process and analysis of species pairs at different stages of divergence provides insight into how it unfolds. Previous genomic studies on young species pairs have revealed peaks of divergence and heterogeneous genomic ...
Mark Ravinet +5 more
doaj +1 more source
Reevaluating claims of ecological speciation in Halichoeres bivittatus
Ecology and Evolution, 2021 Allopatry has traditionally been viewed as the primary driver of speciation in marine taxa, but the geography of the marine environment and the larval dispersal capabilities of many marine organisms render this view somewhat questionable.
Dan L. Warren +5 more
doaj +1 more source
Genome-wide evidence for speciation with gene flow in Heliconius butterflies. [PDF]
Genome Res, 2013 Most speciation events probably occur gradually, without complete and immediate reproductive isolation, but the full extent of gene flow between diverging species has rarely been characterized on a genome-wide scale. Documenting the extent and timing of admixture between diverging species can clarify the role of geographic ...
Martin SH +9 more
europepmc +7 more sources
The existence of species rests on a metastable equilibrium between inbreeding and outbreeding [PDF]
, 2011 Background: Speciation corresponds to the progressive establishment of reproductive barriers between groups of individuals derived from an ancestral stock.
Etienne Joly
core +2 more sources
Scientific Reports, 2017 Divergent selection plays a critical role not only as a speciation driver but also in maintaining post-speciation divergence. In the absence of direct evidence, ancestral interspecific gene flow between incipient species can reflect ancient selective ...
Bing-Hong Huang +3 more
doaj +1 more source
Barrier loci and progress towards evolutionary generalities [PDF]
, 2017 No abstract ...
Berner +7 more
core +1 more source