Historical review of developmental biology, Biology

HISTORICAL REVIEW

Anoximander (600 B.C.) was the first western philospher who proposed the idea that "living creatures arose from the moist element".
Empedocles (500 B.C.) - The Greek philosopher suggested that foetus arose partially from male and partially from female semen.
Aristotle - Founder / Father of embryology. He described the ontogenic development of chick and many other animals. He wrote a book "De-generation Animalium" / "Historia Animalium" and proposed the "Theory of Entelechy" and given the term Embroyn. According this eggs is undivided and after fertilization division take place.
Fabricus & willeum Harvey (1578-1657) wrote "Exercitationes de generation animalium" and proposed the theory "Ex ova omnia", according this theory all animals originated from eggs.
Von Baer (1792-1876) - Father of modern embryology and observed mammalian eggs and coin the word sperm.
Leeuwenhoek (1677) - First observed sperm of man.
Wilhelm Roux (1850-1924) - Father of experimental embryology.
George Newport (1858) - Discovered fertilization in frog eggs.
Hertwig (1875) - Observed fusion of male and female pro nuclei.
R.V. Graff (1672) - Discovered Graffian folicle in mammalian ovary.
C. F. Wolf - Microscopic study chick embryo and proposed that embryo converts into simple form to complex form.
Schliedon & Schwann - He describe the cellular nature of sperm & ova.
Hartsoeker - He was spermist. He compared the sperm with seeds and egg compared with soil. Seeds get nutrition from soil and grwo. Eggs provide the nutrition to embryo.

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