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Extreme divergence of mitochondrial DNA within species of pulmonate land snails
Mitochondrial DNA, inherited predominantly through the female line, has been exceptionally useful for reconstructing phylogenies (Avise, in Molecular markers, natural history and evolution. New York:Expand
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A phylogeny of the land snails (Gastropoda: Pulmonata)
We have undertaken the first large–scale molecular phylogenetic analysis of the Stylommatophora. Sequences of the ribosomal RNA gene–cluster were examined in 104 species of snails and slugs from 50Expand
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Ecological genetics and speciation in land snails of the genus Partula
Land snails of the genus Partula Ferussac offer several advantages for the study of micro-evolutionary change. They are highly variable both within and between populations. Their mobility is low, soExpand
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History or current selection? A molecular analysis of ‘area effects’ in the land snail Cepaea nemoralis
We have used molecular variation in microsatellite and mitochondrial DNA to throw light on the origins of enigmatic geographical patterns, known as ‘area effects’, in the shell polymorphisms of theExpand
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THE COIL POLYMORPHISM IN PARTULA SUTURALIS DOES NOT FAVOR SYMPATRIC SPECIATION
Theories of sympatric speciation have a long and controversial history (Mayr, 1963) and have enjoyed a resurgence of interest in recent years (e.g., Maynard Smith, 1966; Bush, 1975; Tauber andExpand
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CLINES IN THE GENETIC DISTANCE BETWEEN TWO SPECIES OF ISLAND LAND SNAILS :HOW 'MOLECULAR LEAKAGE' CAN MISLEAD US ABOUT SPECIATION
Two species of land snails, Partula taeniata and Partula suturalis , occur sympatrically on the island of Moorea in French Polynesia. The genetic distance between them varies clinally from north toExpand
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Parallel evolution in Marquesan partulid land snails
Partulid land snails of the genus Samoana inhabiting the Marquesas Islands of French Polynesia exist as two distinct types, the «thick-shelled» and «thin-shelled» species. The two types differ inExpand
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Commitment to erythroid differentiation by friend erythroleukemia cells: a stochastic analysis
A method for the clonal analysis of murine erythroleukemia cells has been developed which allows the precise characterization of the number of progeny produced by each cell and the degree ofExpand
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Development of common wheat germplasm resistant to barley yellow dwarf virus by biotechnology.
Barley yellow dwarf virus (BYDV) is one of the most serious wheat diseases in China. So far no resistance has been described in common wheat. A certain level of BYDV resistance was found in thirteenExpand
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MICROHABITAT DIFFERENCES AMONG GENETICALLY SIMILAR SPECIES OF PARTULA
Much of modern ecology consists of explaining apparent exceptions to the Volterra-Gause Principle (Volterra, 1926; Gause, 1934). There are at least three main ways by which competitive exclusion mayExpand
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