Concept of epigenesis was proposed by

The concept of epigenesis was proposed by Wolf.
The embryologist Caspar Friedrich Wolff refuted preformationism in 1759 in favor of epigenesis, but this did not put an end to preformationism.
epigenesis is the process by which plants, animals, and fungi develop from a seed, spore, or egg through a sequence of steps in which cells differentiate and organs form.