Results 61 to 70 of about 1,382,172 (317)

Making the most of clade selection [PDF]

open access: yes, 2017
Clade selection is unpopular with philosophers who otherwise accept multilevel selection theory. Clades cannot reproduce, and reproduction is widely thought necessary for evolution by natural selection, especially of complex adaptations.
Doolittle, W. Ford
core   +1 more source

Parallel genetic evolution and speciation from standing variation

open access: yesEvolution Letters, 2019
Adaptation often proceeds from standing variation, and natural selection acting on pairs of populations is a quantitative continuum ranging from parallel to divergent. Yet, it is unclear how the extent of parallel genetic evolution during adaptation from
Ken A. Thompson   +2 more
doaj   +1 more source

Phenological divergence, population connectivity and ecological differentiation in two allochronic seabird populations

open access: yesFrontiers in Marine Science, 2022
Phenological divergence between conspecific populations breeding sympatrically is increasingly recognized as an important evolutionary process that may lead to allochronic speciation.
Fernando Medrano   +11 more
doaj   +1 more source

New chromosome-scale genomes provide insights into marine adaptations of sea snakes (Hydrophis: Elapidae)

open access: yesBMC Biology, 2023
Background Sea snakes underwent a complete transition from land to sea within the last ~ 15 million years, yet they remain a conspicuous gap in molecular studies of marine adaptation in vertebrates.
Alastair J. Ludington   +4 more
doaj   +1 more source

A new species in the major malaria vector complex sheds light on reticulated species evolution [PDF]

open access: yes, 2019
Complexes of closely related species provide key insights into the rapid and independent evolution of adaptive traits. Here, we described and studied Anopheles fontenillei sp.n., a new species in the Anopheles gambiae complex that we recently discovered ...
Akone-Ella O.   +11 more
core   +1 more source

Mating system and speciation I: Accumulation of genetic incompatibilities in allopatry.

open access: yesPLoS Genetics, 2022
Self-fertilisation is widespread among hermaphroditic species across the tree of life. Selfing has many consequences on the genetic diversity and the evolutionary dynamics of populations, which may in turn affect macroevolutionary processes such as ...
Lucas Marie-Orleach   +2 more
doaj   +1 more source

In silico karyotyping of chromosomally polymorphic malaria mosquitoes in the Anopheles gambiae complex [PDF]

open access: yes, 2019
Chromosomal inversion polymorphisms play an important role in adaptation to environmental heterogeneities. For mosquito species in the Anopheles gambiae complex that are significant vectors of human malaria, paracentric inversion polymorphisms are ...
Besansky, N. J.   +7 more
core   +1 more source

Recombining your way out of trouble: the genetic architecture of hybrid fitness under environmental stress [PDF]

open access: yes, 2020
Hybridization between species is a fundamental evolutionary force that can both promote and delay adaptation. There is a deficit in our understanding of the genetic basis of hybrid fitness, especially in non-domesticated organisms.
Bendixsen, D.   +5 more
core   +1 more source

Local adaptation and reproductive isolation: when does speciation start?

open access: yesEvolutionary Journal of the Linnean Society
The speciation process often takes a long time. The speciation continuum framework has been useful to reconstruct the evolutionary processes that result in the formation of new species but defining when this continuum starts is far from trivial ...
Roger K Butlin, Rui Faria
semanticscholar   +1 more source

Taxon-specific, phased siRNAs underlie a speciation locus in monkeyflowers

open access: yesScience, 2023
Taxon-specific small RNA loci are widespread in eukaryotic genomes, yet their role in lineage-specific adaptation, phenotypic diversification, and speciation is poorly understood. Here, we report that a speciation locus in monkeyflowers (Mimulus), YELLOW
Mei Liang   +7 more
semanticscholar   +1 more source

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