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 varied topical data such as the genetic drift in recent human evolution; delayed stochastic models of genetic switches; lactase phenotypes and relationships to diseases; the changing face of genetic counseling in the 21st century; RNAi-mediated RNA degradation in longevity enhancement; gene study involved in hyperactive syndromes and anxiety and genetics research in colorectal cancer.