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Questions and Answers
What is the focus of embryology?
What is the focus of embryology?
According to preformation theories, where were preformed embryos or miniatures of the adult found?
According to preformation theories, where were preformed embryos or miniatures of the adult found?
What does the theory of Epigenesis assume about embryonic development and differentiation?
What does the theory of Epigenesis assume about embryonic development and differentiation?
What did the cell theory discover about the ovum?
What did the cell theory discover about the ovum?
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What does the Recapitulation Theory suggest about embryonic stages?
What does the Recapitulation Theory suggest about embryonic stages?
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Study Notes
- Embryology is the branch of biology that studies the development of animals from a fertilized egg into an organism with all major organ systems.
- Embryology encompasses the complex changes an organism undergoes from fertilization to death.
- Preformation theories suggested that sex-cells contained preformed miniatures of the adult.
- According to preformation theories, the ovum contained a small, unobservable miniature of the adult, while the sperm presented a miniature organism in its head.
- Theory of Epigenesis posits that embryonic development and differentiation originate in a homogeneous living matter.
- Cell theory was discovered, revealing that the ovum is a single cell and fertilization results in the formation of the zygote.
- Recapitulation Theory suggests that ancestral characters reappear in the developmental stages of an individual, and that embryonic stages of a higher animal resemble the adult stages of its ancestor.
- Embryology provides insight into the development of an individual into an adult, as well as understanding the origins of genetic diseases and birth defects, allowing for potential diagnosis and treatment before birth.
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Description
Test your knowledge of embryology with this quiz covering the development of animals from fertilized eggs to the formation of major organ systems. Explore theories of embryology, including preformation theories and germ layers.
