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Vijay S. Adusumilli Tara L. Walker Rupert W. Overall Gesa M. Klatt Salma A. Zeidan Sara Zocher Dilyana G. Kirova Konstantinos Ntitsias Tim J. Fischer Alex M. Sykes Susanne Reinhardt Andreas Dahl Jörg Mansfeld Annette E. Rünker Gerd Kempermann 《Cell Stem Cell》2021,28(2):300-314.e6
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784.
Matthew E Hurles Jayne Nicholson Elena Bosch Colin Renfrew Bryan C Sykes Mark A Jobling 《Genetics》2002,160(1):289-303
A number of alternative hypotheses seek to explain the origins of the three groups of Pacific populations-Melanesians, Micronesians, and Polynesians-who speak languages belonging to the Oceanic subfamily of Austronesian languages. To test these various hypotheses at the genetic level, we assayed diversity within the nonrecombining portion of the Y chromosome, which contains within it a relatively simple record of the human past and represents the most informative haplotypic system in the human genome. High-resolution haplotypes combining binary, microsatellite, and minisatellite markers were generated for 390 Y chromosomes from 17 Austronesian-speaking populations in southeast Asia and the Pacific. Nineteen paternal lineages were defined and a Bayesian analysis of coalescent simulations was performed upon the microsatellite diversity within lineages to provide a temporal aspect to their geographical distribution. The ages and distributions of these lineages provide little support for the dominant archeo-linguistic model of the origins of Oceanic populations that suggests that these peoples represent the Eastern fringe of an agriculturally driven expansion initiated in southeast China and Taiwan. Rather, most Micronesian and Polynesian Y chromosomes appear to originate from different source populations within Melanesia and Eastern Indonesia. The Polynesian outlier, Kapingamarangi, is demonstrated to be an admixed Micronesian/Polynesian population. Furthermore, it is demonstrated that a geographical rather than linguistic classification of Oceanic populations best accounts for their extant Y chromosomal diversity. 相似文献
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J. T. Sykes 《Economic botany》1972,26(1):21-31
Fruit of quince cultivars (Cydonia oblongaMill.),collected from several sites in Western Turkey, are described. Fruit characteristics are given for eight cultivars and their variation in five other cultivars is described. Distribution, nomenclature and production methods are discussed in relation to programs for collection and conservation of fruit germ plasm. 相似文献
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