Results 31 to 40 of about 403,470 (288)

QTL mapping reveals the genetic architecture of loci affecting pre- and post-zygotic isolating barriers in Louisiana Iris

open access: yesBMC Plant Biology, 2012
Background Hybridization among Louisiana Irises has been well established and the genetic architecture of reproductive isolation is known to affect the potential for and the directionality of introgression between taxa. Here we use co-dominant markers to
Ballerini Evangeline S   +7 more
doaj   +1 more source

Experimental hybridization and reproductive isolation between two sympatric species of tephritid fruit flies in the Anastrepha fraterculus species group [PDF]

open access: yes, 2017
Among tephritid fruit flies, hybridzation has been found to produce local adaptationand speciation, and in the case of pest species, induce behavioral and ecological alterations that can adversely impact efficient pest management. The fraterculus species
Altuzar Molina, Alma   +5 more
core   +1 more source

Mating system variation and assortative mating of sympatric bromeliads (Pitcairnia spp.) endemic to neotropical inselbergs [PDF]

open access: yes, 2015
Premise of the study: The mating system is an important component of the complex set of reproductive isolation barriers causing plant speciation.
Cozzolino, Salvatore   +4 more
core   +1 more source

Evolutionarily diverged regulation of X-chromosomal genes as a primal event in mouse reproductive isolation. [PDF]

open access: yesPLoS Genetics, 2014
Improper gene regulation is implicated in reproductive isolation, but its genetic and molecular bases are unknown. We previously reported that a mouse inter-subspecific X chromosome substitution strain shows reproductive isolation characterized by male ...
Ayako Oka   +3 more
doaj   +1 more source

Mating Patterns and Post-Mating Isolation in Three Cryptic Species of the Engystomops Petersi Species Complex

open access: yes, 2017
Determining the extent of reproductive isolation in cryptic species with dynamic geographic ranges can yield important insights into the processes that generate and maintain genetic divergence in the absence of severe geographic barriers.
Hoke, Kim L.   +3 more
core   +4 more sources

Influence of pre-reproductive maternal enrichment on coping response to stress and expression of c-Fos and glucocorticoid receptors in adolescent offspring [PDF]

open access: yes, 2017
Environmental enrichment (EE) is an experimental setting broadly used for investigating the effects of complex social, cognitive, and sensorimotor stimulations on brain structure and function.
Begega, Azucena   +11 more
core   +1 more source

Selection and environmental adaptation along a path to speciation in the Tibetan frog Nanorana parkeri. [PDF]

open access: yes, 2018
Tibetan frogs, Nanorana parkeri, are differentiated genetically but not morphologically along geographical and elevational gradients in a challenging environment, presenting a unique opportunity to investigate processes leading to speciation. Analyses of
Che, Jing   +18 more
core   +2 more sources

Evolution of reproductive isolation in plants [PDF]

open access: yesHeredity, 2008
Reproductive isolation is essential for the process of speciation and much has been learned in recent years about the ecology and underlying genetics of reproductive barriers. But plant species are typically isolated not by a single factor, but by a large number of different pre- and postzygotic barriers, and their potentially complex interactions ...
A. Widmer   +2 more
openaire   +3 more sources

The Cost Of Reinforcement: Selection On Flower Color In Allopatric Populations Of Phlox Drummondii* [PDF]

open access: yes, 2014
Reinforcement is the process by which increased reproductive isolation between incipient species evolves due to selection against maladaptive hybrids or costly hybrid mating.
Hopkins, Robin, Rausher, Mark D.
core   +1 more source

MODELS OF EVOLUTION OF REPRODUCTIVE ISOLATION [PDF]

open access: yesGenetics, 1983
ABSTRACT Mathematical models are presented for the evolution of postmating and premating reproductive isolation. In the case of postmating isolation it is assumed that hybrid sterility or inviability is caused by incompatibility of alleles at one or two loci, and evolution of reproductive isolation occurs by random fixation of different ...
M, Nei, T, Maruyama, C I, Wu
openaire   +2 more sources

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