Mitochondrial dna (mtdna) haplogroup composition in Turkish sheep breeds

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2009

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Yüncü, Eren

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In the present study, haplogroup composition of five native Turkish sheep breeds, (Karayaka, Akkaraman, Gökçeada, Dağlıç, Morkaraman) and two sheep breeds from neighboring countries (Herik from Iran, samples from Azerbaijan) were determined by single strand length polymorphism (SSCP) analysis of mitochondrial DNA (mtDNA) NADH dehydrogenase subunit 4 (ND4) region and restriction fragment length polymorphism (RFLP) analysis of mtDNA control (CR) region. Results of the SSCP and RFLP approaches were found to be 96,82% consistent. Most of the 3,18% inconsistency was due to unidentified band patterns of 9 individuals. SSCP method could identify haplogroups A, B and C, but not D and E. Similarly RFLP method could identify haplogroup A, B and possibly D, but not E and C. Data of the present study were compared with those of the previous studies to test the robustness of results under different samplings and were found to be homogenous with a previous study with similar sampling strategy. Neighbor joining tree, principal component analysis (PCA), Delaunay network analysis and analysis of molecular variance (AMOVA) were employed to analyze the haplogroup frequencies and breeds were separated in four groups according to the genetic barriers between breeds from different geographical locations. Strongest differentiation was present between two groups which were eastern breeds (Morkaraman, Herik-Iran and Azerbaijan) and western breeds (Gökçeada, Akkaraman, Karayaka and Dağlıç). Additionally, Azerbaijan was proposed as the entrance point of the haplogroup A and the Iran was proposed as the entrance point of haplogroup C to Anatolia with the Spearman rank correlation test.

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Biology.

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http://etd.lib.metu.edu.tr/upload/12610314/index.pdf
https://hdl.handle.net/11511/18361

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

E. Yüncü, “Mitochondrial dna (mtdna) haplogroup composition in Turkish sheep breeds,” M.S. - Master of Science, Middle East Technical University, 2009.