ontogenesis

In biology, the history of the individual development of an organized being, as distinguished from phylogenesis, or the history of genealogical development, and from biogenesis, or life-development generally. Also ontogeny.

The history of the individual development of an organism; the sequence of events involved in the development of an organism; the history of the evolution of the germ; the development of an individual organism, — in distinction from phylogeny, or evolution of the tribe. Called also henogenesis, henogeny.

the arising or development of an individual organism.

(biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level