- Question of
Preformation theory of genetics:
- Bonnet
- Walff
- Linnaeus
- Von Baer
- Question of
Recapitulation theory:
- Huxley
- K von Baer
- Ernst Halckel
- Spencer
- Question of
Use and disuse theory:
- Stebbins
- Lamarck
- Darwin
- Von Baer
- Question of
Theory of Catastrophism:
- Anaximander
- Aristotle
- Cuvier
- Hans Low
- Question of
Theory of Pangenesis
- De Vries
- Lamarck
- Wagner
- Darwin
- Question of
Isolation theory:
- Wagner
- Wigglesworth
- Wallace
- Sewall Wright
- Question of
Theory of Orthogenesis:
- Eimer & Nagadi
- Malthus & Maya
- Haldane & Fisher
- Muller & Bateson
- Question of
The gradient theory:
- Boveri
- Child
- Horstadius
- All the above
- Question of
Theory of Epigenesis:
- Lamarck
- Knight
- Wolff
- Goss
- Question of
Theory of germplasm:
- Johannson
- Weismann
- Mendel
- De Vries
- Question of
Glacial epoch theory:
- Daly
- Darwin
- Semper
- Dana
- Question of
Tritubercular theory:
- Rose
- Cope-Osborn
- Cuvier
- Crick
- Question of
Genie balance theory of sex-determination:
- Bridges
- Boveri
- Bailey
- Balbiani
- Question of
The operon theory:
- Beadle & Tatum
- Hershey & Chase
- Jacob & Monad
- Simpson & Sutton
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