Podcast
Questions and Answers
Who proposed the theory of preformationism in embryology?
Who proposed the theory of preformationism in embryology?
- Aristotle
- Leonardo da Vinci
- Karl Ernst von Baer
- Marcello Malpighi (correct)
What is the prevailing notion in western human embryology in the 18th century?
What is the prevailing notion in western human embryology in the 18th century?
- Epigenesis
- Cell theory
- Spontaneous generation
- Preformationism (correct)
Who originally proposed the idea of epigenesis in embryonic development?
Who originally proposed the idea of epigenesis in embryonic development?
- Karl Ernst von Baer
- Marcello Malpighi
- Leonardo da Vinci
- Aristotle (correct)
Who is considered to have developed modern embryology from their work?
Who is considered to have developed modern embryology from their work?
Which branch of animal biology studies the prenatal development of gametes, fertilization, and development of embryos and fetuses?
Which branch of animal biology studies the prenatal development of gametes, fertilization, and development of embryos and fetuses?
Flashcards
What is preformationism?
What is preformationism?
The theory that organisms develop from pre-existing miniature versions of themselves.
What was preformationism?
What was preformationism?
The prevailing idea in 18th-century Western human embryology that organisms develop from pre-existing miniature versions of themselves.
What is epigenesis?
What is epigenesis?
The idea that an embryo develops progressively from an undifferentiated egg cell.
Who is Karl Ernst von Baer?
Who is Karl Ernst von Baer?
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What is embryology?
What is embryology?
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Study Notes
Preformationism and Epigenesis
- Preformationism was proposed by Bonnet, where he believed that the embryo was preformed in the sperm.
- In the 18th century, Western human embryology was dominated by preformationism, which posited that the embryo was preformed in either the sperm or egg.
Epigenesis
- The idea of epigenesis in embryonic development was originally proposed by Aristotle, where the embryo develops from a formless mass through a series of gradual changes.
Development of Modern Embryology
- Modern embryology was developed from the work of Karl Ernst von Baer, who is considered the father of modern embryology.
Study of Embryonic Development
- Embryology is the branch of animal biology that studies the prenatal development of gametes, fertilization, and development of embryos and fetuses.
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