Results 11 to 20 of about 43,166 (258)

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

Avian 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, Chiafen Yeh, Jiang Chang, Hongyan Yao, Yiqiang Fu, Chengte Yao, Xiao Wang, Shouhsien Li, Zhengwang Zhang   +8 more
doaj   +1 more source

Incipient speciation between host-plant strains in the fall armyworm

BMC 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, Sudeeptha Yainna, Kiwoong Nam   +2 more
doaj   +1 more source

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

Ecology 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, Masashi Sekino, Motoyuki Hara, Kiyoshi Kikuchi   +3 more
doaj   +1 more source

GENETICS, SPECIATION AND THE FOUNDER PRINCIPLE [PDF]

Evolution, 1984
W. Anderson, K. Kaneshiro & L. V. Giddings: H. L. Carson: Interviews toward an intellectual history W. B. Provine: Founder effects and genetic revolutions in microevolution and speciation: an historical perspective G. D. Carr, R. H. Robichaux, M. S. Witter & D. W.
L V, Giddings, K Y, Kaneshiro
openaire   +4 more sources

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

Toxins, 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, Kenneth P. Wray, Dragana Sanader, Preston J. McDonald, Lauren M. Trumbull, Austin H. Patton, Darin R. Rokyta   +6 more
doaj   +1 more source

Genetic tests for ecological and allopatric speciation in anoles on an island archipelago. [PDF]

PLoS Genetics, 2010
From Darwin's study of the Galapagos and Wallace's study of Indonesia, islands have played an important role in evolutionary investigations, and radiations within archipelagos are readily interpreted as supporting the conventional view of allopatric ...
Roger S Thorpe, Yann Surget-Groba, Helena Johansson   +2 more
doaj   +1 more source

Differential genetic responses to the stress revealed the mutation-order adaptive divergence between two sympatric ginger species

BMC Genomics, 2018
Background Divergent genetic responses to the same environmental pressures may lead sympatric ecological speciation possible. Such speciation process possibly explains rapid sympatric speciation of island species.
Bing-Hong Huang, Yuan-Chien Lin, Chih-Wei Huang, Hsin-Pei Lu, Min-Xin Luo, Pei-Chun Liao   +5 more
doaj   +1 more source

The Genetics of Speciation by Reinforcement

PLoS Biology, 2004
Reinforcement occurs when natural selection strengthens behavioral discrimination to prevent costly interspecies matings, such as when matings produce sterile hybrids. This evolutionary process can complete speciation, thereby providing a direct link between Darwin's theory of natural selection and the origin of new species.
Ortiz-Barrientos, Daniel, Counterman, Brian A., Noor, Mohamed A. F.   +2 more
openaire   +6 more sources

What Is Speciation? [PDF]

PLoS Genetics, 2016
Concepts and definitions of species have been debated by generations of biologists and remain controversial. Microbes pose a particular challenge because of their genetic diversity, asexual reproduction, and often promiscuous horizontal gene transfer ...
B Jesse Shapiro, Jean-Baptiste Leducq, James Mallet   +2 more
doaj   +1 more source

Sampling genetic diversity in the sympatrically and allopatrically speciating Midas cichlid species complex over a 16 year time series

BMC Evolutionary Biology, 2007
Background Speciation often occurs in complex or uncertain temporal and spatial contexts. Processes such as reinforcement, allopatric divergence, and assortative mating can proceed at different rates and with different strengths as populations diverge ...
Bunje Paul ME, Barluenga Marta, Meyer Axel   +2 more
doaj   +1 more source