Historical perspective of livestock breeding; Traits in farm animals; Review of classical/Mendelian genetics; Population genetics: Gene, genetic, genotypic frequencies; Hardy-Weinberg law; Effects of selection, mutation &migration of gene frequencies; Heritability & Repeatability: Definitions; methods of estimation; importance or uses; Principles of selection: Types of selection; stages of selection; criteria for selection; methods of selection; Prediction of improvement from selection; Mating systems: inbreeding systems; crossbreeding systems.. OBJECTIVE: