Investigations in General Biology presents an overview of studies in general biology, including behavior, biological models, cell activities, organization of plants and animals, population genetics, and evolution. The opening chapters deal with the significance of accurate observations of systematic ordering of biological events in plants and animals. The use of laboratory tools for biological analysis and the application of such tools in biological diffusion process are also considered. This book describes the use of model to investigate cellular phenomenon and an application of a valid model of cell membrane function using microscope. The responses in solutions of different concentrations are recorded. Considerable chapters discuss refined experimental approach to testing a biological hypothesis, with emphasis on the idea of using a control. The control indicates the amount of response that occurs due to variables not anticipated. Furthermore, this book discusses the organization of the flowering plant, including those organs involved in maintenance as well as animal organization, particularly, in crayfish and frog. It presents the proper statistical procedures that can be used by geneticist to determine probability genetic ratio. It explains gene frequencies of characters in human populations and consequences of nonrandom reproduction and subsequent departure from Hardy-Weinberg equilibrium. Finally, the concluding chapters deal with physiological attributes and classification of animal and plant population. General biology students and instructors will greatly benefit from this book.