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Fine mapping and evolution of the major sex determining region in turbot (Scophthalmus maximus).

G3 (Bethesda).. 2014-08; 
X Taboada, M Hermida, BG Pardo, M Vera, , Piferrer F, Vinas A, Bouza C, MartÍnez P. Universidad de Santiago de Compostela
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摘要

Fish sex determination (SD) systems are varied, suggesting evolutionary changes including either multiple evolution origins of genetic SD from non-genetic systems (such as environmental SD), and/or turnover events replacing one genetic system by another. When genetic SD is found, cytological differentiation between the two members of the sex chromosome pair is often minor or undetectable. The turbot (Scophthalmus maximus), a valuable commercial flatfish, has a ZZ/ZW system and a major SD region on linkage group 5 (LG5), but there are also other minor genetic and environmental influences. We here report refined mapping of the turbot SD region, supported by comparative mapping with model fish species, to identify... More

关键词

Turbot; comparative mapping; evolution of sex determination; sex determining master gene; sex genetic differentiation
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