Results 21 to 30 of about 6,725,001 (330)

The wild tomato species Solanum chilense shows variation in pathogen resistance between geographically distinct populations [PDF]

open access: yesPeerJ, 2017
Wild tomatoes are a valuable source of disease resistance germplasm for tomato (Solanum lycopersicum) breeders. Many species are known to possess a certain degree of resistance against certain pathogens; however, evolution of resistance traits is yet ...
Remco Stam   +2 more
doaj   +2 more sources

Spectrum of genetic diversity and networks of clonal organisms [PDF]

open access: yesJournal of the Royal Society Interface, 4, 1093-1102 (2007), 2006
Clonal organisms present a particular challenge in population genetics because, in addition to the possible existence of replicates of the same genotype in a given sample, some of the hypotheses and concepts underlying classical population genetics models are irreconcilable with clonality.
arxiv   +1 more source

Arlequin (version 3.0): An integrated software package for population genetics data analysis

open access: yesEvolutionary bioinformatics online, 2005
Arlequin ver 3.0 is a software package integrating several basic and advanced methods for population genetics data analysis, like the computation of standard genetic diversity indices, the estimation of allele and haplotype frequencies, tests of ...
L. Excoffier   +2 more
semanticscholar   +1 more source

Genetic draft, selective interference, and population genetics of rapid adaptation [PDF]

open access: yesAnnual Review of Ecology, Evolution, and Systematics Vol. 44: 195-215, 2013, 2013
To learn about the past from a sample of genomic sequences, one needs to understand how evolutionary processes shape genetic diversity. Most population genetic inference is based on frameworks assuming adaptive evolution is rare. But if positive selection operates on many loci simultaneously, as has recently been suggested for many species including ...
arxiv   +1 more source

pegas: an R package for population genetics with an integrated-modular approach

open access: yesBioinform., 2010
SUMMARY pegas (Population and Evolutionary Genetics Analysis System) is a new package for the analysis of population genetic data. It is written in R and is integrated with two other existing R packages (ape and adegenet).
E. Paradis
semanticscholar   +1 more source

The Pennsylvania grotto sculpin: population genetics [PDF]

open access: yesSubterranean Biology, 2021
The Pennsylvania grotto sculpin is known from just two caves of the Nippenose Valley in central Pennsylvania, USA. They exhibit emergent troglobitic morphological traits and are the second northern-most cave adapted fish in the world.
Luis Espinasa   +2 more
doaj   +3 more sources

From Understanding Genetic Drift to a Smart-Restart Parameter-less Compact Genetic Algorithm [PDF]

open access: yesGenetic and Evolutionary Computation Conference, GECCO 2020, pages 805-813. ACM. 2020, 2020
One of the key difficulties in using estimation-of-distribution algorithms is choosing the population size(s) appropriately: Too small values lead to genetic drift, which can cause enormous difficulties. In the regime with no genetic drift, however, often the runtime is roughly proportional to the population size, which renders large population sizes ...
arxiv   +1 more source

8 The population genetics of the haemoglobinopathies

open access: yesBaillière's Clinical Haematology, 1993
The haemoglobinopathies are the commonest single gene disorders known, and are so common in some regions of the world that the majority of the population carries at least one genetic abnormality affecting the structure or synthesis of the haemoglobin molecule. The prevalence of the common haemoglobinopathies (the alpha- and beta-thalassaemias, HbS, HbC
Flint, J, Harding, R, Boyce, A, Clegg, J
openaire   +6 more sources

Sampling related individuals within ponds biases estimates of population structure in a pond‐breeding amphibian

open access: yesEcology and Evolution, 2019
Effective conservation and management of pond‐breeding amphibians depends on the accurate estimation of population structure, demographic parameters, and the influence of landscape features on breeding‐site connectivity.
Kyle A. O'Connell   +4 more
doaj   +1 more source

Spatial Population Genetics: It's About Time [PDF]

open access: yesAnnual Review of Ecology, Evolution and Systematics, 2019
Many important questions about the history and dynamics of organisms have a geographical component: How many are there, and where do they live? How do they move and interbreed across the landscape?
Gideon S. Bradburd, Peter L. Ralph
semanticscholar   +1 more source

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