Results 31 to 40 of about 2,551,139 (304)

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

Genetic diversity of Streptococcus suis isolates as determined by comparative genome hybridization [PDF]

open access: yes, 2011
Background Streptococcus suis is a zoonotic pathogen that causes infections in young piglets. S. suis is a heterogeneous species. Thirty-three different capsular serotypes have been described, that differ in virulence between as well as within serotypes.
Smith, H.E.   +26 more
core   +1 more source

K-ras and p53 mutations in colonic lavage fluid of patients with colorectal neoplasias [PDF]

open access: yes, 2001
Background: The adenoma-carcinoma sequence has its molecular basis in several gene mutations of which K-ras and p53 are of paramount importance. The aims of this study were to evaluate whether these genetic alterations can be detected in colonic lavage ...
Folwaczny, Christian   +3 more
core   +2 more sources

Distribution, phylogeography and hybridization between two parapatric sibling ant species of the genus Temnothorax [PDF]

open access: yes, 2007
The present-day range distribution of many species has been influenced by re-occuring glacials of the past. By the retreat into different refugia situated in more southerly regions, species were geographically separated and sometimes diverged into ...
Pusch, Katja
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

The Hybrid Specialty of Psychiatric Genetics [PDF]

open access: yesActa geneticae medicae et gemellologiae, 1962
No matter what our everyday activity in the mental health field, we can say with conviction that the function of a new superspecialty such as Psychiatric Genetics, the subject of this late-morning session, is profoundly influenced by contemporary cultural, social and political conditions as well as by the never-ending challenge of scientific conquests.
openaire   +2 more sources

Multiple ITS Copies Reveal Extensive Hybridization within Rheum (Polygonaceae), a Genus That Has Undergone Rapid Radiation [PDF]

open access: yes, 2014
Background: During adaptive radiation events, characters can arise multiple times due to parallel evolution, but transfer of traits through hybridization provides an alternative explanation for the same character appearing in apparently non-sister ...
Ailan Wang   +27 more
core   +1 more source

Reef fish hybridization: lessons learnt from butterflyfishes (genus Chaetodon)

open access: yesEcology and Evolution, 2012
Natural hybridization is widespread among coral reef fishes. However, the ecological promoters and evolutionary consequences of reef fish hybridization have not been thoroughly evaluated.
Stefano R. Montanari   +4 more
doaj   +1 more source

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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