Abstract
The Japanese biological term Fukusei denotes some micro-level to macro-level biological phenomena. It can be interpreted as DNA replication at the molecular level directly, cell division at the cellular level indirectly, reproduction at the individual level, and speciation at the species level. The new Japanese national curriculum framework for high schools, the Course of Study (CS), assigns greater importance to teaching “Life possesses not only unity but also diversity.” We suggest that the Fukusei concept is applicable to this new curriculum for the most important commonality of life, and for comprehensive understanding and teaching of life, along with the course of the Japanese biology textbooks Basic Biology (Seibutsu-Kiso in Japanese) and Advanced Biology (Seibutsu in Japanese).