Evaluation of g 1-gdf 9 polymorphisms on twining births of ghzel sheep breeds

INTRODUCTION One of the most important economic traits in sheep's twine. To date, mutations in three genes (BMPR-1B, BMP15 and GDF9) in sheep have been detected as higher fecundity or infertility sources. Previously, this has been reported that G1 mutation in Iranian Ghezel breeds is the main source for twining births. This study was aimed to evaluate if the polymorhisms in G1-GDF9 gene can induce prolificay of Ghezel breeds.