Results 21 to 30 of about 42,013 (168)
Speciation genetics: current status and evolving approaches [PDF]
The view of species as entities subjected to natural selection and amenable to change put forth by Charles Darwin and Alfred Wallace laid the conceptual foundation for understanding speciation. Initially marred by a rudimental understanding of hereditary principles, evolutionists gained appreciation of the mechanistic underpinnings of speciation ...
Wolf, J., Lindell, J., Backstrom, N.
openaire +3 more sources
Speciation and the developmental alarm clock
New species arise as the genomes of populations diverge. The developmental ‘alarm clock’ of speciation sounds off when sufficient divergence in genetic control of development leads hybrid individuals to infertility or inviability, the world awoken to the
Asher D Cutter, Joanna D Bundus
doaj +1 more source
Background Divergent selection on host-plants is one of the main evolutionary forces driving ecological speciation in phytophagous insects. The ecological speciation might be challenging in the presence of gene flow and assortative mating because the ...
Estelle Fiteni +8 more
doaj +1 more source
Divergent selection drives genetic differentiation in an R2R3-MYB transcription factor that contributes to incipient speciation in Mimulus aurantiacus. [PDF]
Identifying the molecular genetic basis of traits contributing to speciation is of crucial importance for understanding the ecological and evolutionary mechanisms that generate biodiversity. Despite several examples describing putative "speciation genes,"
Matthew A Streisfeld +2 more
doaj +1 more source
Speciation is the key evolutionary process for generating biological diversity and has a central place in evolutionary and ecological research. How species diverge and adapt to different habitats is one of the most exciting areas in speciation studies ...
Zeyu Zheng +11 more
doaj +1 more source
The testing association of environmental variables with genetic and epigenetic variation could be crucial to deciphering the effects of environmental factors playing roles as selective drivers in ecological speciation.
Jia-Jia Cao +4 more
doaj +1 more source
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
Frequency-dependent selection predicts patterns of radiations and biodiversity. [PDF]
Most empirical studies support a decline in speciation rates through time, although evidence for constant speciation rates also exists. Declining rates have been explained by invoking pre-existing niches, whereas constant rates have been attributed to ...
Carlos J Melián +4 more
doaj +1 more source
Hybrid speciation in a marine mammal: the clymene dolphin (Stenella clymene).
Natural hybridization may result in the exchange of genetic material between divergent lineages and even the formation of new taxa. Many of the Neo-Darwinian architects argued that, particularly for animal clades, natural hybridization was maladaptive ...
Ana R Amaral +4 more
doaj +1 more source
Speciation environments and centres of diversity in southern Africa. I. Conceptual framework
A knowledge of the nature and distribution of the environments where speciation (micro-evolution) is or has been rapid would help explain plant distributions and give insight into the mechanisms of plant evolution.
E. R. Robinson, G. E. Gibbs Russell
doaj +1 more source

