Results 51 to 60 of about 42,013 (168)
The Genetic Architecture of Intra-Species Hybrid Mito-Nuclear Epistasis
Frontiers in Genetics, 2018 Genetic variants that are neutral within, but deleterious between, populations (Dobzhansky-Muller Incompatibilities) are thought to initiate hybrid dysfunction and then to accumulate and complete the speciation process.
Rania Haddad +2 more
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Speciation Genetics: Reinforcement by Shades and Hues [PDF]
Current Biology, 2012 Mating with a member of another species can seriously reduce an organism's fitness, so mechanisms ought to evolve to prevent it where hybridizing species meet. This old idea of 'reinforcement' has found new support in an elegant pair of studies of the ecological genetics of flower colour in an annual herb.
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Speciation Genetics: Search for the Missing Snowball [PDF]
Current Biology, 2010 Theory predicts that, as species diverge from one another, the number of genetic incompatibilities causing sterility or inviability in interspecies hybrids grows faster than linearly, or snowballs. Two new genetic analyses now provide the first empirical support for this snowball effect.
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BMC Evolutionary Biology, 2007 Background The sensory drive hypothesis predicts that divergent sensory adaptation in different habitats may lead to premating isolation upon secondary contact of populations.
Seehausen Ole +3 more
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Drosophila yakuba mayottensis, a new model for the study of incipient ecological speciation
Fly, 2017 A full understanding of how ecological factors drive the fixation of genetic changes during speciation is obscured by the lack of appropriate models with clear natural history and powerful genetic toolkits.
Amir Yassin
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mBio, 2019 Speciation is a central mechanism of biological diversification. While speciation is well studied in plants and animals, in comparison, relatively little is known about speciation in fungi.
Andrew Ryan Passer +9 more
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Speciation with gene flow: Evidence from a complex of alpine butterflies (Coenonympha, Satyridae)
Ecology and Evolution, 2019 Until complete reproductive isolation is achieved, the extent of differentiation between two diverging lineages is the result of a dynamic equilibrium between genetic isolation and mixing.
Thibaut Capblancq +3 more
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Insects, 2011 Chromosomal rearrangements can alter the rate and patterns of gene flow within or between species through a reduction in the fitness of chromosomal hybrids or by reducing recombination rates in rearranged areas of the genome.
Steven J. B. Cooper +2 more
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Bacterial Speciation: Genetic Sweeps in Bacterial Species [PDF]
Current Biology, 2016 One theory of bacterial speciation states that bacterial and animal species share the property of cohesion, meaning that diversity within a species is constrained. A new study provides direct evidence that genome-wide sweeps can limit diversity within bacterial species.
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