Embryology: the History of Developmental and Generational Theory - Research Article from World of Genetics

This encyclopedia article consists of approximately 3 pages of information about Embryology.
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The study of embryology, the science that deals with the formation and development of the embryo and fetus, can be traced back to the ancient Greek philosophers. Originally, embryology was part of the field known as "generation," a term that also encompassed studies of reproduction, development and differentiation, regeneration of parts, and genetics. Generation described the means by which new animals or plants came into existence. The ancients believed that new organisms could arise through sexual reproduction, asexual reproduction, or spontaneous generation. As early as the sixth century B.C., Greek physicians and philosophers suggested using the developing chick egg as a way of investigating embryology.

Aristotle (384-322 B.C.) described the two historically important models of development known as preformation and epigenesis. According to preformationist theories, an embryo or miniature individual preexists in...

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This section contains 829 words
(approx. 3 pages at 300 words per page)
Buy the Embryology: the History of Developmental and Generational Theory Encyclopedia Article
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Embryology: the History of Developmental and Generational Theory from Gale. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.
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