Results 31 to 40 of about 234,175 (326)

Genetic Distinctiveness but Low Diversity Characterizes Rear-Edge Thuja standishii (Gordon) Carr. (Cupressaceae) Populations in Southwest Japan

open access: yesDiversity, 2021
Rear-edge populations are of significant scientific interest because they can contain allelic variation not found in core-range populations. However, such populations can differ in their level of genetic diversity and divergence reflecting variation in ...
James R. P. Worth   +7 more
doaj   +1 more source

Life at the front of an expanding population [PDF]

open access: yes, 2008
Recent microbial experiments suggest that enhanced genetic drift at the frontier of a two-dimensional range expansion can cause genetic sectoring patterns with fractal domain boundaries.
Hallatschek, Oskar, Nelson, David R.
core   +1 more source

Shell color polymorphism in marine gastropods

open access: yesEvolutionary Applications, 2023
Marine gastropods are characterized by an incredible variation in shell color. In this review, we aim to introduce researchers to previous studies of shell color polymorphism in this group of animals, trying to provide an overview of the topic and ...
Juan Gefaell   +2 more
doaj   +1 more source

Maize Germplasm Conservation in Southern California's Urban Gardens: Introduced Diversity Beyond ex situ and in situ Management. [PDF]

open access: yes, 2016
Contemporary germplasm conservation studies largely focus on ex situ and in situ management of diversity within centers of genetic diversity. Transnational migrants who transport and introduce landraces to new locations may catalyze a third type of ...
Ellstrand, Norman C, Heraty, Joanne M
core   +1 more source

Evolutionary significance of the variation in acoustic communication of a cryptic nocturnal primate radiation (Microcebus spp.)

open access: yesEcology and Evolution, 2020
Acoustic phenotypic variation is of major importance for speciation and the evolution of species diversity. Whereas selective and stochastic forces shaping the acoustic divergence of signaling systems are well studied in insects, frogs, and birds ...
Alida Frankline Hasiniaina   +8 more
doaj   +1 more source

Evidence of widespread selection on standing variation in Europe at height-associated SNPs. [PDF]

open access: yes, 2012
Strong signatures of positive selection at newly arising genetic variants are well documented in humans(1-8), but this form of selection may not be widespread in recent human evolution(9).
Chiang, Charleston WK   +6 more
core   +1 more source

Different evolutionary paths to complexity for small and large populations of digital organisms [PDF]

open access: yes, 2016
A major aim of evolutionary biology is to explain the respective roles of adaptive versus non-adaptive changes in the evolution of complexity. While selection is certainly responsible for the spread and maintenance of complex phenotypes, this does not ...
Adami, Christoph, LaBar, Thomas
core   +7 more sources

Strong isolation by distance among local populations of an endangered butterfly species (Euphydryas aurinia)

open access: yesEcology and Evolution, 2021
The marsh fritillary (Euphydryas aurinia) is a critically endangered butterfly species in Denmark known to be particularly vulnerable to habitat fragmentation due to its poor dispersal capacity.
Cino Pertoldi   +6 more
doaj   +1 more source

Implications of long tails in the distribution of mutant effects [PDF]

open access: yes, 2005
Long-tailed distributions possess an in nite variance, yet a nite sample that is drawn from such a distribution has a nite variance. In this work we consider a model of a population subject to mutation, selection and drift.
Abramowitz   +17 more
core   +3 more sources

Combining genetic and demographic data for the conservation of a Mediterranean marine habitat-forming species.

open access: yesPLoS ONE, 2015
The integration of ecological and evolutionary data is highly valuable for conservation planning. However, it has been rarely used in the marine realm, where the adequate design of marine protected areas (MPAs) is urgently needed.
Rosana Arizmendi-Mejía   +7 more
doaj   +1 more source

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