Results 11 to 20 of about 126,743 (307)

Hybridization and adaptive radiation

open access: yesTrends in Ecology & Evolution, 2004
Whether interspecific hybridization is important as a mechanism that generates biological diversity is a matter of controversy. Whereas some authors focus on the potential of hybridization as a source of genetic variation, functional novelty and new species, others argue against any important role, because reduced fitness would typically render hybrids
Seehausen, Ole
openaire   +3 more sources

Adaptive Radiation [PDF]

open access: yes, 2017
Adaptive radiation is the rapid diversification, from a single common ancestor, of a group of species whose members exhibit a diverse array of adaptations and occupy different ecological niches. Numerous adaptive radiations are evident in the primates, past and present, with two of the best-studied examples being the lemurs of Madagascar and the ...
Sarah Elton, Elton, S.
core   +5 more sources

Adaptive radiation therapy [PDF]

open access: yesPhysics in Medicine and Biology, 1997
Adaptive radiation therapy is a closed-loop radiation treatment process where the treatment plan can be modified using a systematic feedback of measurements. Adaptive radiation therapy intends to improve radiation treatment by systematically monitoring treatment variations and incorporating them to re-optimize the treatment plan early on during the ...
D, Yan, F, Vicini, J, Wong, A, Martinez
openaire   +4 more sources

Pangenomes as a framework for adaptive radiation, speciation, and adaptation. [PDF]

open access: yesAm J Bot
Abstract Understanding the genomic basis of diversification is a central goal in evolutionary biology. In recent years, the development and use of pangenomes, a genomic representation of multiple individuals within a lineage (a set of related populations, subspecies, ecotypes, or species), has enabled researchers to differentiate ...
Tellini N   +5 more
europepmc   +3 more sources

Diversification of cephalic shield shape and antenna in phyllosoma I of slipper and spiny lobsters (Decapoda: Achelata)

open access: yesFrontiers in Marine Science, 2023
Slipper (Scyllaridae) and spiny (Palinuridae) lobsters show a complex life cycle with a planktonic larval phase, named phyllosoma. This unique larval form within Achelata (Decapoda) is characterized by a transparent dorsoventrally compressed body and a ...
José María Landeira   +7 more
doaj   +1 more source

Oca2 targeting using CRISPR/Cas9 in the Malawi cichlid Astatotilapia calliptera

open access: yesRoyal Society Open Science, 2022
Identifying genetic loci underlying trait variation provides insights into the mechanisms of diversification, but demonstrating causality and characterizing the role of genetic loci requires testing candidate gene function, often in non-model species ...
Bethan Clark   +8 more
doaj   +1 more source

The interactive effects of environmental gradient and dispersal shape spatial phylogenetic patterns

open access: yesFrontiers in Ecology and Evolution, 2022
IntroductionThe emergence and maintenance of biodiversity include interacting environmental conditions, organismal adaptation to such conditions, and dispersal.
Yun-Ting Jang   +4 more
doaj   +1 more source

Chromosomal Radiation: A model to explain karyotypic diversity in cryptic species [PDF]

open access: yesGenetics and Molecular Biology, 2023
We present a concept that explains the pattern of occurrence of widely distributed organisms with large chromosomal diversity, large or small molecular divergence, and the insufficiency or absence of morphological identity.
Karine Frehner Kavalco, Rubens Pasa
doaj   +1 more source

Ecomorphological convergence in the walking leg dactyli of two clades of ascidian‐ and mollusc‐associated shrimps (Decapoda: Caridea: Palaemonidae)

open access: yesEcology and Evolution, 2023
Symbiotic species, living within or on the surface of host organisms, may evolve a wide range of adaptations as a result of various selection pressures, host specificity of the symbiont and the nature of the symbiosis.
Werner deGier   +3 more
doaj   +1 more source

Plant growth forms dictate adaptations to the local climate

open access: yesFrontiers in Plant Science, 2022
Adaptive radiation is a significant driver of biodiversity. Primarily studied in animal systems, mechanisms that trigger adaptive radiations remain poorly understood in plants. A frequently claimed indicator of adaptive radiation in plants is growth form
Patrícia dos Santos   +9 more
doaj   +1 more source

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