Sharq al-Adna
نویسندگان
چکیده
منابع مشابه
Challenges of phylogenetic analyses of aDNA sequences.
One of the crucial steps of authentication of aDNA sequences is phylogenetic consistency. Amplified sequences should fit into the phylogenetic framework of their supposed origin. An inherent property of aDNA sequences however, is their short sequence length. Additionally, genes for aDNA studies are often chosen by their preservation potential rather than by phylogenetically informative content....
متن کاملPaleoparasitological report on Ascaris aDNA from an ancient East Asian sample.
In this study, Ascaris DNA was extracted and sequenced from a medieval archaeological sample in Korea. While Ascaris eggs were confirmed to be of human origin by archaeological evidence, it was not possible to pinpoint the exact species due to close genetic relationships among them. Despite this shortcoming, this is the first Ascaris ancient DNA (aDNA) report from a medieval Asian country and t...
متن کاملInferring population continuity versus replacement with aDNA: a cautionary tale from the Aleutian Islands.
In The Aleutian and Commander Islands and Their Inhabitants (Philadelphia: Wistar Institute of Anatomy and Biology, 1945), Hrdlicka proposed a population replacement event in the Aleutian Islands approximately 1,000 years ago based on a perceived temporal shift in cranial morphology. However, the archaeological record indicates cultural, and presumed population, continuity for more than 4,000 y...
متن کاملThe adnA transcriptional factor affects persistence and spread of Pseudomonas fluorescens under natural field conditions.
A soil plot was inoculated with a mixture of Pseudomonas fluorescens Pf0-2, the wild type, and Pf0-5a, a Tn5 insertion mutant in adnA, at 7.84 log CFU/g of soil. Over a period of 231 days, culturable populations of both strains were measured at selected times below and away from the point of inoculation. Pf0-5a did not spread as fast and attained significantly lower populations than Pf0-2. At s...
متن کاملThe Pseudomonas fluorescens transcription activator AdnA is required for adhesion and motility.
The locations of two mutations that prevent adhesion of Pseudomonas fluorescens Pf0-1 to sand columns and seeds (adn, adhesion) were identified. Both lie in a single gene showing homology to the NtrC/NifA family of transcription activators. The predicted 55 kDa protein encoded by adnA is most closely related to activators involved in expression of flagellar proteins, consistent with the lack of...
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ژورنال
عنوان ژورنال: Middle East Journal of Culture and Communication
سال: 2020
ISSN: 1873-9857,1873-9865
DOI: 10.1163/18739865-20201000