The origin, functions and teaching approaches regarding the process of meiosis are described in this comprehensive book. Meiosis is the fundamental process for sexual reproduction in eukaryotes, occurring in single-celled eukaryotes and in most multicellular eukaryotes including animals and most plants. Hence, meiosis is of significant interest as far as science and natural human curiosity about sexual reproduction are concerned. A better understanding of important aspects of meiosis has developed in recent years. This has led to comprehension of major issues regarding meiosis and reproduction including progression mechanism of meiosis at the molecular level, emergence of meiosis and sex during evolution, and the major adaptive function of meiosis and sex. Moreover, changing perspectives on meiosis and sex have posed the question of how should meiosis be taught. This book provides answers to these questions, with extensive supporting references from currently available literature.