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Wyświetlanie 1-15 z 23
Tytuł:
Phylogeographic Estimates of Colonization of The Deep Atlantic by The Protobranch Bivalve Nucula Atacellana
Autorzy:
Jennings, Robert M.
Etter, Ron J.
Powiązania:
https://bibliotekanauki.pl/articles/2051166.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Icelandic waters
Protobranchia
population genetics
species origin
North Atlantic demographics
Źródło:
Polish Polar Research; 2014, 2; 261-278
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic characteristics of three Baltic Zostera marina populations
Autorzy:
Gonciarz, M.
Wiktor, J.
Tatarek, A.
Weglenski, P.
Stankovic, A.
Powiązania:
https://bibliotekanauki.pl/articles/48768.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
Zostera marina
eelgrass population
genetic characteristics
polymorphism
microsatellite
population genetics
aquatic ecosystem
Źródło:
Oceanologia; 2014, 56, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The genetic diversity of HLA DRB1* alleles among Indian and African populations
Autorzy:
Nandakumar, R.
Powiązania:
https://bibliotekanauki.pl/articles/1158256.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Admixture
Demography
HLA DRB1
Indian and African populations
Migration
Population Genetics
Opis:
The HLA system is highly polymorphic and commonly used as a marker to understand core population genetical aspects such as stratification, human migration, predisposition to diseases and tissue transplantation compatibility. Although HLA alleles are generally treated as equidistant molecular units in population genetic studies, the diversity of DNA allelic frequencies among populations is also considered to be crucial to interpret the observed HLA polymorphisms. This study compares the variation of HLA DRB1 alleles across various subgroups of both Indian and African Populations, using their respective allelic frequencies. The HLA DRB1 allelic frequencies for 3,153 individuals of 32 subgroups of both Indian and African populations, were collected from the Allele Frequency Net Database (AFND). Correlation matrix and Grid diagram were compiled using the R statistical package. Allele frequencies were analyzed for the respective population subgroups using XLSTAT. The North East Indian populations were completely devoid of HLA DRB1* 16, which is fairly present in south Indian populations. The South Indian populations harbor both HLA DRB1* 10 and HLA DRB1* 15 at relatively higher levels but are very scarce of HLA DRB1* 07, HLA DRB1* 09, HLA DRB1* 12 and HLA DRB1* 13. The alleles HLA DRB1* 03, HLA DRB1* 04 and HLA DRB1* 07 could represent an epicenter for the admixture of African, North-East Indian and South Indian populations.
Źródło:
World Scientific News; 2018, 114; 15-29
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Importance of investigations carried out by Professor Bolesław Suszka in population genetics of forest trees
Autorzy:
Sabor, J
Powiązania:
https://bibliotekanauki.pl/articles/41481.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
selection programme
forestry
gene bank
selection breeding
forest nursery
plant genetics
Suszka Boleslaw
forest tree
population genetics
Opis:
Modern forest selection programs concern natural and protected populations of trees characterized by a great genetic variability and also production stands frequently deformed by human activity. In the latter, artificial regeneration is prevailing. Forest nurseries working in the organizational structures of State Forests can guarantee the proper provenance (genotype)of seeds and the quality of seedlings obtained from them. The condition, however, is a close uniformity in the conservation of forest gene resources, and selection breeding of forest trees. The success of the program depends also on the development of modern infrastructure for forest nurseries and applied technologies. The latter task was the field of activity of Professor Bolesław Suszka, Ph.D., and his many-year research and organizational and didactic activity in Poland and abroad. The methods in long-term storage and their pretreatment in case of dormant seeds, developed by Professor Suszka, created the theoretical and practical basis for the conservation of forest gene resources not only in Poland.
Źródło:
Dendrobiology; 2002, 47 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New multiplex PCR assays for estimating genetic diversity in rainbow trout (Oncorhynchus mykiss) by polymorphism of microsatellite DNA
Autorzy:
Kaczmarczyk, D.
Kaczor, A.
Powiązania:
https://bibliotekanauki.pl/articles/363262.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
microsatellite DNA
multiplex PCR
population genetics
rainbow trout
DNA mikrosatelitarne
genetyka populacyjna
pstrąg tęczowy
Opis:
Multiplex PCR is a useful technique for estimating genetic diversity. This paper presents 3 new sets of primer pairs for effectively amplifying 10 microsatellite DNA loci from rainbow trout (Oncorhynchus mykiss). Unlike other sets of primer pairs that have been developed for amplifying rainbow trout microsatellite loci, ours do not require the hot-start PCR technique. In the paper, we describe the steps taken to choose the loci for each multiplex assay and to verify the genotyping results. We provide the compositions of the PCR mixture and the characteristics of the PCR thermal profile recommended for amplification.
Źródło:
Environmental Biotechnology; 2013, 9, 1; 19-24
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
AFLP analysis reveals infraspecific phylogenetic relationships and population genetic structure of two species of Aconitum in Central Europe
Autorzy:
Mitka, J.
Boron, P.
Wroblewska, A.
Baba, W.
Powiązania:
https://bibliotekanauki.pl/articles/59372.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
AFLP method
phylogenetic relationship
population structure
genetic structure
Aconitum
taxonomy
population genetics
evolution
Sudetes Mountains
Central Europe
Opis:
The genetic diversity of two Aconitum species endemic to the Carpathian Mountains and Sudetes was studied. A reticulate evolution between them was earlier postulated as an effect of secondary contact. The genetic diversity at the individual and taxonomic levels was examined across the entire geographical ranges of the taxa in 11 populations based on 247 AFLP markers found in 112 individuals in the Sudetes and Western Carpathians. The overall genetic differentiation was greater within the Sudetic A. plicatum (Fst = 0.139, P < 0.001) than within the Carpathian A. firmum (Fst = 0.062, P < 0.001), presumably due to the long-lasting geographic isolation between the Giant Mts and Praděd (Sudetes) populations of the species. Interestingly, relatively distant and presently isolated populations of A. plicatum and A. f. subsp. maninense share a part of their genomes. It could be an effect of their common evolutionary history, including past and present reticulations. The introgression among infraspecific taxa of Aconitum is common, probably as a result of seed dispersal within a distance of ca. 20 km (Mantel's r = 0.36, P = 0.01). Aconitum f. subsp. maninense had the highest genetic diversity indices: Nei's h and rarefied FAr, and divergence index DW (P < 0.05), pointing to its presumably ancient age and long-term isolation.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematics Serve to Orchestrate the Progression of Studies In Biological Sciences: Overview on Occasion of April, the Mathematics Awareness Month
Autorzy:
Khyade, Vitthalrao B.
Wanve, Hanumant V.
Powiązania:
https://bibliotekanauki.pl/articles/1177867.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Biomathematics
Quantitative Genetics; Population Dynamics; Supercomplex Mechanisms
Opis:
The mathematics and biology are the interdisciplinary approaches in the field of scientific research. Both, mathematics and biology deserve a wide range of applications. Mathematical biology or biomathematics is the study of mathematics for biology. One can derive the quantitative genetics through consideration of infinitesimal effects at a large number of gene loci, together with the assumption of linkage equilibrium or quasi-linkage equilibrium. Ronald Fisher made the intensive work on fundamental advances in statistics (Example: Analysis of Variance). This achievement by Ronald Fisher was through his work on quantitative genetics. The phylogenetics is one more important branch of population genetics that led to the extensive development of Biological sciences through Mathematics. The Phylogenetics is the branch dealing with the reconstruction and analysis of phylogenetic (evolutionary) trees and network based on inherited characteristics. Assumptions on the “Constant Population Size” belongs to many “Population Genetics” models. The population dynamics is treating the “Variable Population Size” as absence of genetic variation. History of such type of work goes back to the 19th century. Even as far as 1798. In 1798, Thomas Malthus formulated the first principle of population dynamics. This principle later became popularize as the “Malthusian Growth Model”. Alfred J. Lotka, in 1910 proposed the model of autocatalytic chemical reactions. Vito Volterra tried his best to extend this work and titled as “Lotka - Volterra Predator-Prey Equations”. Basically, Vito Volterra was Mathematician. The mathematical epidemiology is the study of infectious disease affecting populations. Upto some extent, the “Population dynamics” use to overlaps mathematical epidemiology. The mathematics and Biology, both are serving a lot to orchestrate the progression of the global research.
Źródło:
World Scientific News; 2018, 98; 140-149
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic diversity of Galium cracoviense Ehrend. [Rubiaceae] - the Polish endemic plant
Autorzy:
Cieslak, E
Szelag, Z.
Powiązania:
https://bibliotekanauki.pl/articles/58412.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Rubiaceae
endemic plant
endemic species
Polska
Galium cracoviense
genetic diversity
population genetics
gene flow
glacial relict
isolated population
Opis:
Genetic diversity of Galium cracoviense, a narrow endemic species, limited to the small area in southern Poland and concentrated on Jurassic limestone outcrops near Częstochowa, was examined using the AFLP marker. Twenty nine individuals from three spatially isolated populations were used for the study. AFLP analysis yielded 157 bands, of which 110 (70%) were polymorphic. The AMOVA analysis revealed a substantially higher variation within populations (89.35%) than among them (10.65%). Values of parameters describing population genetic diversity, such as Shannon index and gene diversity index estimated for each population, were highly similar. The results indicate a high level of genetic polymorphism as well as a high genetic similarity of the isolated populations of G. cracoviense and thus an unconstrained gene flow between them. Based on the results we conclude that additional demographic and genetic studies, are necessary to monitor potential decrease of populations size resulting mainly from the mechanical destruction of plants and their habitats caused by intense tourism. Due to the small general range of occurrence, conservation should include the highest possible number of populations of G. cracoviense.
Źródło:
Acta Societatis Botanicorum Poloniae; 2009, 78, 2; 123-129
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic diversity of postglacial relict shrub Betula nana revealed by RAPD analysis
Autorzy:
Dabrowska, G
Dzialuk, A.
Burnicka, O.
Ejankowski, W.
Gugnacka-Fiedor, W.
Goc, A.
Powiązania:
https://bibliotekanauki.pl/articles/41579.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Betula nana
genetic diversity
genetic resource
conservation
population genetics
postglacial relict shrub
random amplified polymorphic DNA
Opis:
A sample of Betula nana from the Linie reserve near Dąbrowa Chełmińska, have been fingerprinted using random amplified polymorphic DNA (RAPD). The high level of genetic variation was detected. All individuals had unique genotypes, supporting the generally high resolving power of RAPD’s. For the conservation strategy, information about the distribution of the genetic variation within and among populations plays very important role. Thus, extensive study in other populations of dwarf birch is needed.
Źródło:
Dendrobiology; 2006, 55; 19-23
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polimorfizm locus SE33 w populacji Górnego Śląska (Polska południowa)
Polymorphism of SE 33 locus in a population sample from Upper Silesia (southern Poland)
Autorzy:
Droździok, Kornelia
Kabiesz, Jadwiga
Tomsia, Marcin
Rębała, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1373992.pdf
Data publikacji:
2014
Wydawca:
Centralne Laboratorium Kryminalistyczne Policji
Tematy:
locus ACTBP2
populacja Górnego Śląska
genetyka sądowa
locus Se 33< Upper Silesia
population genetics
statistical analysis
Opis:
Praca przedstawia wyniki badań populacyjnych w obrębie locus ACTBP2 (human beta-actinrelatedpseudogene (SE33) w populacji Górnego Śląska. Locus SE33 jest najbardziej polimorficznym ze wszystkich markerów stosowanych dotychczas w genetyce sądowej, zarówno w badaniach dotyczących ustalania sporności ojcostwa, pokrewieństwa i w identyfikacji śladów biologicznych. Badania przeprowadzono w grupie 1315 osobników dorosłych, niespokrewnionych, płci męskiej i żeńskiej. Celem niniejszej pracy było określenie częstości występowania poszczególnych alleli locus SE33 w badanej populacji, ocena zgodności rozkładu alleli z prawem Hardy-Weinberga, obliczenie parametrów oceniających przydatność markera w medycynie sądowej. Zbadanie homogenności rozkładu alleli SE33 pomiędzy badaną populacją a populacjami z innych obszarów Polski.
In the paper the authors show the results of the population research on locus SE 33 in a representative sample of 1315 unrelated individuals (males and females) of European origin living in a southern part of Poland (Upper Silesia).
Źródło:
Problemy Kryminalistyki; 2014, 284
0552-2153
Pojawia się w:
Problemy Kryminalistyki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
PCR-RFLP-based molecular studies on inter-population variability in the crucian carp (Carassius carassius L.)
Autorzy:
Kempter, J.
Panicz, R.
Makowska, M.
Metza, M.
Keszka, S.
Kielpinski, M.
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/841729.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
PCR-RFLP method
molecular study
interpopulation variability
carp
crucian carp
Carassius carassius
Cyprinidae
fish
population genetics
restriction enzyme
Opis:
Genetic variability of three sympatric crucian carp ( Carassius carassius ) populations from NW Poland was studied within a research project aimed at assessing the utility of those populations for stocking in inland waters. DNA samples were collected from 65 individuals. Restriction analysis was performed using 4 enzymes (HaeIII, HinfI, FspBI, TasI) of known restriction sites. The restriction pro files obtained were classified as belonging to a single haplotype (H-1). Selected DNA products were sequenced; the subsequent comparison made it possible to detect the presence of substi- tutions in the genome fragment analysed.
Źródło:
Zeszyty Naukowe Uniwersytetu Szczecińskiego. Acta Biologica; 2011, 18
1230-3976
Pojawia się w:
Zeszyty Naukowe Uniwersytetu Szczecińskiego. Acta Biologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Population genetics analysis of Garlic virus A, Garlic virus B, Garlic virus C and Garlic virus X
Autorzy:
Bereda, M.
Paduch-Cichal, E.
Powiązania:
https://bibliotekanauki.pl/articles/12683733.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
garlic
Allium
population genetics
genetic analysis
plant virus
garlic virus A
garlic virus B
garlic virus C
garlic virus X
Opis:
Garlic virus A (GarV-A), Garlic virus B (GarV-B), Garlic virus C (GarV-C) and Garlic virus X (GarV-X) are members of the genus Allexivirus in the family Alphaflexiviridae. In this study, we collected 10, 30, 10 and 14 isolates of GarV-A, GarV-B, GarV-C and GarV-X, respectively, from different parts of Poland. All sequences of coat protein (CP) and nucleic-acid binding protein (NABP) regions of Allexivirus isolates available in GenBank were also included in this study. The nucleotide and amino acid sequences identities within each population differed substantially depending on the region of the genome and virus species. The results of selection pressure analysis showed that populations of each Allexivirus underwent negative selection, but the extent of the negative selection varied. It was also concluded that the GarV-A and GarV-C populations underwent a decrease in population size or balancing selection, while the GarV-B and GarV-X populations underwent an increase in population size. It was concluded that both populations of GarV-X evolved independently in each respective area, in contrast to populations of GarV-A, GarV-B and GarV-C.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 3; 99-115
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cultural Change and Ethnic Change in the Early Middle Ages – the Example of Central and Eastern Europe in the Context of Contemporary Biological Studies of the Continent’s Past Populations
Zmiana kulturowa i zmiana etniczna we wczesnym średniowieczu – przykład Europy Środkowo-Wschodniej w kontekście współczesnych badań biologicznych dawnych populacji naszego kontynentu
Autorzy:
Pleszczyński, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1374245.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
early Middle Ages
Central and Eastern Europe
cultural change
ethnic change
population genetics
wczesne średniowiecze
Europa Środkowo-Wschodnia
zmiana kulturowa
zmiana etniczna
genetyka populacji
Opis:
The author of the article aims at revealing the serious difference that has emerged between the traditional interpretations of the history of Central and Eastern Europe, present in the works of historians and archaeologists, and the new data brought by the DNA research of the past populations of this area. The former, based on the results of archaeological research pointing to cultural changes, assume a thorough population exchange that supposedly took place in the early Middle Ages, while the latter indicate the continuity of the same biological population peopling the region since over a thousand years BC. The author tries to explain these discrepancies by pointing to the cases of cultural and even ethnic changes within the same biological population coming from other parts of Europe, taking place under the influence of small groups of strangers.
Celem autora niniejszego tekstu jest ujawnienie poważnej różnicy, jaka pojawiła się pomiędzy tradycyjnymi interpretacjami dziejów Europy Środkowo-Wschodniej, obecnymi w pracach historyków i archeologów a nowymi danymi przynoszonymi przez badania DNA dawnych populacji tego obszaru. Te pierwsze, opierając się o wyniki prac archeologów, wskazujących na zmiany kulturowe, zakładają gruntowną wymianę populacji, jaka miałaby nastąpić we wczesnym średniowieczu, podczas gdy te drugie wskazują na ciągłość zaludnienia regionu przez taką samą biologicznie populację od ponad tysiąca lat przed naszą erą. Autor stara się wyjaśnić te rozbieżności wskazując na znane z innych obszarów Europy przypadki zmian kultury, a nawet etniczności w obrębie tej samej biologicznie populacji zachodzące pod wpływem niewielkich grup przybyszów.
Źródło:
Res Historica; 2020, 50; 55-78
2082-6060
Pojawia się w:
Res Historica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potential for genetic conversion of Norway spruce Picea abies (L.) Karst. stands and methods for preserving gene resources of Istebna race in Silesian Beskid Mts
Autorzy:
Sabor, J
Powiązania:
https://bibliotekanauki.pl/articles/41439.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Silesian Beskids Mountains
Norway spruce
forest tree
Picea abies
genetic conversion
genetic value
silvicultural value
species composition
regeneration
forest site type
tree stand
population genetics
Opis:
The forests of the Silesian Beskid Mts have a specific composition with a marked dominance of Norway spruce. Although spruce stands are seriously threatened, some of them, such as those of Istebna race, show excellent genetic value. The work stresses the need for the conversion of spruce stands in the Silesian Beskid range on the basis of population genetics and describes the principles of such conversion.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Population genetic structure of Iris pumila L. in Ukraine: effects of habitat fragmentation
Autorzy:
Bublyk, O.
Andreev, I.
Parnikoza, I.
Kunakh, V.
Powiązania:
https://bibliotekanauki.pl/articles/2117815.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
conservation
genetic polymorphism
habitat fragmentation
ISSR markers
population
genetics
Opis:
Habitat fragmentation is one of serious threats to biodiversity of nature in today's world. The present study of a typical steppe species Iris pumila L. (Iridaceae) has analyzed the impacts of geographical isolation and population size on genetic diversity and population structure in conditions of habitat fragmentation. The key indices of population genetic variability calculated from the ISSR markers data were on average as follows: Shannon diversity index (S) – 0.188; unbiased Nei’s gene diversity (He ) – 0.123; and the average measure of Jaccard’s genetic distances between individuals within populations – 58.4%. Although the largest population had significantly higher values of S and He, the small and marginal populations also showed a comparable level of variation. Most of the genetic variation of I. pumila was distributed within the populations. A strong correlation was found between Nei’s genetic distances and geographic distances between the populations. According to the Bayesian analysis, genetic structure of the populations was highly homogeneous; however, the presence of admixed genotypes indicated the possibility of gene flow between the populations at present.
Źródło:
Acta Biologica Cracoviensia. Series Botanica; 2020, 62, 1; 51-61
0001-5296
Pojawia się w:
Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:
Biblioteka Nauki
Artykuł
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