Question

history and basic concept of epigenesis

Answer 1

Scientists believe that the answer lies in a process called epigenesis.Epigenesis is the way a gene changes in the face of environmental influences. In other words, things in the environment can positively or negatively impact the way genetic material is expressed in the development of human beings.

Answer 2

Epigenesis versus preformation.Epigenesis (~upon formation) is a theory of development that states that new structures arise by progressing through a number of different stages. ... One preformation theory, the theory of the Homunculus suggested that a little human embryo was hidden in the head of every sperm.