Results 21 to 30 of about 328,565 (318)

Species integrity, introgression, and genetic variation across a coral reef fish hybrid zone

open access: yesEcology and Evolution, 2020
Hybridization and introgression are evolutionarily significant phenomena breaking down species boundaries. “Hybrid zones” (regions of species overlap and hybridization) enable quantification of hybridization frequency and examination of mechanisms ...
Ashton Gainsford   +4 more
doaj   +1 more source

Using molecular tools to guide management of invasive alien species: assessing the genetic impact of a recently introduced island bird population [PDF]

open access: yes, 2015
Aim: Biological invasions are a major threat to island biodiversity and are responsible for a large proportion of species declines and extinctions worldwide.
van de Crommenacker, J   +22 more
core   +1 more source

Additive and non-additive epigenetic signatures of natural hybridization between fish species with different mating systems

open access: yesEpigenetics, 2022
Hybridization is a major source of evolutionary innovation. In plants, epigenetic mechanisms can help to stabilize hybrid genomes and contribute to reproductive isolation, but the relationship between genetic and epigenetic changes in animal hybrids is ...
Waldir M. Berbel-Filho   +7 more
doaj   +1 more source

Tracing the footprints of a moving hybrid zone under a demographic history of speciation with gene flow

open access: yesEvolutionary Applications, 2020
A lack of optimal gene combinations, as well as low levels of genetic diversity, is often associated with the formation of species range margins. Conservation efforts rely on predictive modelling using abiotic variables and assessments of genetic ...
Mitra Menon   +9 more
doaj   +1 more source

Comparative BAC-based mapping in the white-throated sparrow, a novel behavioral genomics model, using interspecies overgo hybridization [PDF]

open access: yes, 2011
BACKGROUND The genomics era has produced an arsenal of resources from sequenced organisms allowing researchers to target species that do not have comparable mapping and sequence information.
Tuttle, Elaina M   +11 more
core   +1 more source

Genetic diversity analysis and DNA fingerprinting of tomato breeding lines using ssr markers

open access: yesAgraarteadus, 2021
There is a need to expand the information on genetic relationships between tomato (Solanum lycopersicum L.) lines to improve hybridization breeding. The genetic diversity and relationships among 24 tomato lines were evaluated by simple sequence repeat ...
Aziz Mahdi Abd Al-Shammari   +1 more
doaj   +1 more source

Genetic Diversity and Population Structure Assessed Using Microsatellite (SSR) Markers from Relict Populations of Nuphar pumila (Nymphaeaceae)

open access: yesPlants, 2023
The genus Nuphar (Nymphaeaceae) comprises aquatic plant species inhabiting freshwater bodies of the Northern hemisphere temperate regions known as yellow water-lilies. Nuphar lutea and N.
Claudia González-Toral   +2 more
doaj   +1 more source

An Immuno-Genetic Hybrid Algorithm

open access: yesInternational Journal of Computers Communications & Control, 2009
The construction of artificial systems by drawing inspiration from natural systems is not a new idea. The Artificial Neural Network (ANN) and Genetic Algorithms (GAs) are good examples of successful applications of the biological metaphor to the solution of computational problems.
Emad Nabil, Amr Badr, Ibrahim Farag
openaire   +2 more sources

Hybrid genetic algorithms for feature selection [PDF]

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2004
This paper proposes a novel hybrid genetic algorithm for feature selection. Local search operations are devised and embedded in hybrid GAs to fine-tune the search. The operations are parameterized in terms of their fine-tuning power, and their effectiveness and timing requirements are analyzed and compared.
Il-Seok Oh, Jin-Seon Lee, Byung Ro Moon
openaire   +2 more sources

Characterization of two marker chromosomes in a patient with acute nonlymphocytic leukemia by two-color fluorescence in situ hybridization [PDF]

open access: yes, 1993
A patient with acute nonlymphocytic leukemia (ANLL), M5b according to French-American-British (FAB) classification, showed monosomy 16, an extra 1p−, and a 21q+. These derivative chromosomes could not be defined by GTG-banding.
Speicher, Michael R.   +5 more
core   +1 more source

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