👉 Ontogenically refers to a process or development from one stage of an organism's life cycle to another, typically occurring during its lifetime. It involves changes that occur in each cell or organ within an organism at different stages of its growth and development. In biology, this concept is often used to describe the stages of a living organism from embryonic development through the adult state. For example, when studying the development of insects such as caterpillars, ants, or moths, one would consider these