10Development and Differentiation
Since ancient times, people have wondered how organisms are formed during the developmental process, and many researchers have worked tirelessly in search of the answer. Although large amounts of data have been accumulated along the way, a full understanding of the developmental phenomena has not yet been achieved. However, with the development of techniques to analyze these phenomena at the gene level, our knowledge in the area has rapidly increased in recent years. Now, we are becoming increasingly aware that the seemingly diverse biological developmental phenomena involved are in fact related to a number of common basic mechanisms.
By referring to specific case examples, this chapter discusses the basic mechanisms of biological development that have been revealed at the molecular level.