What is ontogeny?
Throughout our lives, we are constantly growing and developing. After all, if you look at the baby and the child who is several years old, the difference will be noticeable with the naked eye. And if you look at the child and the old man ... In science there is a special term for the development of the body - ontogenesis. Let's take a closer look at what is ontogenesis.
Ontogenesis - (from the Greek "being" and "origin, birth") - is the individual development of the body from the fertilization of an egg to death. In fact, ontogeny is the history of the development of the organism.
The term itself was first introduced by E. Haeckel, who claimed that the realization of the genetic material that the parents had laid occurs during ontogenesis.
In multicellular animals, several stages of ontogenesis are distinguished - embryonic (before birth) and postembryonic (from the moment of birth). And in viviparous animals, which include man, the stages are called prenatal and postnatal.
What is ontogenesis - considers several sections of biology.In general, ontogenesis considers the biology of development, and its first stages are in the zone of interest of embryology.