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Definition of Theory of preformation
1. Noun. A theory (popular in the 18th century and now discredited) that an individual develops by simple enlargement of a tiny fully formed organism (a homunculus) that exists in the germ cell.
Lexicographical Neighbors of Theory Of Preformation
Literary usage of Theory of preformation
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Physical Basis of Heredity by Thomas Hunt Morgan (1919)
"It need not be denied, however, that there is an historical connection between
the mediaeval theory of preformation and the particulate theory of heredity. ..."
2. The Physical Basis of Heredity by Thomas Hunt Morgan (1919)
"It need not be denied, however, that there is an historical connection between
the mediaeval theory of preformation and the particulate theory of heredity. ..."
3. The Physical Basis of Heredity by Thomas Hunt Morgan (1919)
"It need not be denied, however, that there is an historical connection between
the mediaeval theory of preformation and the particulate theory of heredity. ..."
4. General Physiology: An Outline of the Science of Life by Max Verworn (1899)
"This is especially true of two doctrines which he advocated—the so-called theory
of preformation, and the theory of irritability. The theory of preformation ..."
5. General Physiology: An Outline of the Science of Life by Max Verworn (1899)
"This is especially true of two doctrines which he advocated — the so-called theory
of preformation, and the theory of irritability. ..."
6. The Cell; Outlines of General Anatomy and Physiology by Oscar Hertwig, Henry Johnstone Campbell (1895)
"The theory of Epigenesis is directly opposed to the theory of Preformation.
Its chief supporter was Caspar Friedrich Wolff (IX. 36), who lived in the middle ..."
7. The Cell: Outlines of General Anatomy and Physiology by Oscar Hertwig, Henry Johnstone Campbell (1895)
"The theory of Epigenesis is directly opposed to the theory of Preformation.
Its chief supporter was Caspar Friedrich Wolff (IX. 36), who lived in the middle ..."
8. An American Text-book of Physiology by William Henry Howell (1900)
"This theory recalls in a refined form the crude theory of Preformation that was
advocated during the seventeenth and eighteenth centuries by Haller, Bonnet, ..."
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