Results 21 to 30 of about 78,579 (231)

Genetic drift in genetic algorithm selection schemes [PDF]

open access: yesIEEE Transactions on Evolutionary Computation, 1999
A method for calculating genetic drift in terms of changing population fitness variance is presented. The method allows for an easy comparison of different selection schemes and exact analytical results are derived for traditional generational selection, steady-state selection with varying generation gap, a simple model of Eshelman's CHC algorithm ...
Rogers, A., Prügel-Bennett, A.
openaire   +2 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

GENETIC DRIFT IN A CLINE [PDF]

open access: yesGenetics, 1975
ABSTRACT A model is developed of genetic drift in a cline maintained by spatially varying natural selection and local dispersal of individuals. The model is analyzed by an approximation scheme which is valid for weak selection and small migration rates.
M, Slatkin, T, Maruyama
openaire   +2 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

Assessment of genetic diversity in natural European hophornbeam (Ostrya carpinifolia Scop.) populations in Turkey

open access: yesBiotechnology & Biotechnological Equipment, 2016
Genetic diversity is a crucial component for plant survivability and fitness in terms of adaptation, genetic stability and variability. In this study, a total of 160 genotypes were investigated using 12 random amplified polymorphic DNA (RAPD) primers to ...
Semsettin Kulac   +4 more
doaj   +1 more source

Relatively rapid evolution rates of SARS-CoV-2 spike gene at the primary stage of massive vaccination

open access: yesBiosafety and Health, 2022
A series of stringent non-pharmacological and pharmacological interventions were implemented to contain the pandemic but the pandemic continues. Moreover, vaccination breakthrough infection and reinfection in convalescent coronavirus disease 2019 (COVID ...
Jing Yang   +10 more
doaj   +1 more source

Change in genetic size of small-closed populations: lessons from a domestic mammal population

open access: yesGenetics and Molecular Biology, 2010
The aim of this study was to monitor changes in genetic size of a small-closed population of Iranian Zandi sheep, by using pedigree information from animals born between 1991 and 2005.
Farhad Ghafouri-Kesbi
doaj   +1 more source

Genetic and morphometric divergence of an invasive bird: the introduced house sparrow (Passer domesticus) in Brazil. [PDF]

open access: yesPLoS ONE, 2012
Introduced species are interesting systems for the study of contemporary evolution in new environments because of their spatial and temporal scales. For this study we had three aims: (i) to determine how genetic diversity and genetic differentiation of ...
Marcos R Lima   +5 more
doaj   +1 more source

Frequent Genetic Mismatch between Vaccine Strains and Circulating Seasonal Influenza Viruses, Hong Kong, China, 1996–2012

open access: yesEmerging Infectious Diseases, 2018
The World Health Organization selects influenza vaccine compositions biannually to cater to peaks in temperate regions. In tropical and subtropical regions, where influenza seasonality varies and epidemics can occur year-round, the choice of vaccine ...
Martin C.W. Chan   +9 more
doaj   +1 more source

Utility of Computed Tomography Surveillance of Asymptomatic Infection in Children and Young Adults Before Allogeneic Hematopoietic Stem Cell Transplant

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Asymptomatic infection poses a significant risk for children undergoing hematopoietic stem cell transplantation (HSCT). Pre‐transplant surveillance computed tomography (CT) is commonly used to identify occult infection, though its diagnostic yield remains uncertain.
Tyler Obermark   +9 more
wiley   +1 more source

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