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1

Variability of the human mitochondrial DNA control region sequences in the Lithuanian population

100%
Kasperaviciute D., Kucinskas V.
Journal of Applied Genetics
|
2002
|
vol. 43
|
issue 2
255-260
EN
The Lithuanians and Latvians are the only two Baltic cultures that survived until today. Since the Neolithic period the native inhabitants of the present-day Lithuanian territory have not been replaced by any other ethnic group. Therefore the genetic characterization of the present-day Lithuanians may shed some light on the early history of the Balts. We have analysed 120 DNA samples from two Lithuanian ethnolinguistic groups (Aukstaiciai and Zemaiciai) by direct sequencing of the first hypervariable segment (HVI) of the control region of mitochondrial DNA (mtDNA) and restriction enzyme digestion for polymorphic site 00073. On the basis of specific nucleotide substitutions the obtained sequences were classified to mtDNA haplogroups. This revealed the presence of almost all European haplogroups (except X) in the Lithuanian sample, including those that expanded through Europe in the Palaeolithic and those whose expansion occurred during the Neolithic. Molecular diversity indices (gene diversity 0.97, nucleotide diversity 0.012 and mean number of pairwise differences 4.5) were within the range usually reported in European populations. No significant differences between Aukstaiciai and Zemaiciai subgroups were found, but some slight differences need further investigation.
2

Genetic variability in selected Polish population of Dreissena polymorpha (Pallas) (Bivalvia: Dreissenidae)

100%
Zielinski R., Soroka M., Wachowiak-Zielinska M.
Journal of Applied Genetics
|
1996
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vol. 37
|
issue 1
105-120
EN
Genetic variability of a selected population of Dreissena polymorpha an invasive species playing a significant role in aquatic ecosystems was studied.Starch gel electrophoresis was used to analyse 8 enzymatic loci in 200 individuals collected from 20 sites in a lake.The population was found to have 75% of polymorphic loci, 2.8 alleles per locus, 3.5 alleles per polymorphic locus, 0.393 coefficient of expected heterozygosity, and 149 genotypes.Zebra mussel clumps were strongly polymorphic; almost every individual had a different genotype.The hihg polymorphism observed in the Dreissena polymorpha clumps had mostly likely resulted from external cross-fertilization and the presence of free-swiming veliger larvae as well as from a considerable heterozygosity of individual bivalves.Genetic variability of the population studied was found to be similar to that of populations inhabiting other Western Pomeranian lakes, including both highly polluted ones and those formed as recently as about 40 years ago.This provides evidence for a mass colonisation of freshwater reservoires effected by very polymorphic parent populations of Dreissena polymorpha.The literature data on North American zebra mussel populations which invaded that continent about 10 years ago show them to be polymorphic, too, but not as much as European ones.
3

Allozyme variability of putative hybrid swarm population (Pinus mugo Turra x P.sylvestris L.) from Topielisko peat-bog near Zieleniec

100%
Siedlewska A., Pros-Glowacki W.
Genetica Polonica
|
1994
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vol. 35
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issue 4
285-302
EN
The purpose of investigation was to analyse the isoenzymatic variability of the population from Topielisko peat-bog, representing probably a hybrid swarm (Pinus mugo Turra x P.sylvestris L.), and compare the genetic structure of this population with that of P.mugo and P.sylvestris populations as putative parental species.Allozyme variation at 10 enzymatic loci was studied in a group of 300 individuals from the population in Topielisko reservation against variation of 5 P.mungo populations from the Tatra Mts. (2 of which from the mountain peat-bogs) and 3 P.silvestris populations.
4

Distribution of HLA-C alleles determined by PCR-SSP in population of Low Silesia

88%
Prussak M., Manczak M., Pochron B., Nowak I., Kusnierczyk P.
Archivum Immunologiae et Therapiae Experimentalis
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2003
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vol. 51
|
issue 2
127-130
EN
We typed 100 unrelated healthy Poles from Low Silesia region for HLA-C using low resolution PCR-SSP and compared observed allele frequencies with data published for other human populations. Poles appeared to be most similar to Germans and Englishmen, and were more distant from French, Catalans and Basques and dissimilar to non-Caucasoids from Equatorial Guinea and Japan. It would be interesting to HLA-C-type other Slavian and non-Slavian people from Middle and Eastern Europe for comparison.
5

Genetic variation and population structure of three Trifolium species

75%
Bulinska-Radomska Z.
Journal of Applied Genetics
|
1996
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vol. 37
|
issue 2
153-160
EN
Three dipoloid Trifolium (Fabaceae) species, T.campestre, T.fragiferum and T.montanum, were electrophoretically assyed to elucidate the range anf organization of genetic variation in relation to the mating system, reproduction mode and longevity of the species.T.campestre, is an annual self-pollinated species, T.fragiferum and T.montanum are cross-pollinated perennials.The former species reproduces both sexually and vegetatively, whereas the latter solely on sexual reproduction.Several populations of each species collected throughoutnPoland were surveyed for 15 enzymes.The measures of variation included:proportion of polymorphic loci per population, average number of alleles per locus, average gene diversity (He) and genetic distance (D).To describe the organization of diversity in each species, total genetic variation per locus (Ht) was calculated.Both cross-polinated species had more polymorphic loci, higher numbers of alleles per locus and higher level of diversity than self-pollinated T.campestre.Most of genetic variation of the latter species was allocated among polulation unlike in T.fragiferum and T.montanum.
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