"Advances in Genetics Research" presents original research results on the leading edge of genetics discovery. Each article has been carefully selected in an attempt to present substantial research results across a broad spectrum. In this continuing series compilation, the authors present and discuss the development of multifunctional plasmids for diverse biotechnological applications; fragile x syndrome-associated language phenotypes; study of the fmr1 gene structure among women with ovarian dysfunction from the Basque country; chromatin structure and epigenetics; the evolution of mammalian x chromosomes and x chromosome inactivation; modifying effect of smoking on the association between SLE and the genetic polymorphisms involved in ROS production; therapeutic approaches to fragile x syndrome; genetic diversity and phylogeny of wild specie teosinte within genera Zea.