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- Embryo_drawing abstract "Embryo drawing is the illustration of embryos in their developmental sequence. In plants and animals, an embryo develops from a zygote, the single cell that results when an egg and sperm fuse during fertilization. In animals, the zygote divides repeatedly to form a ball of cells, which then forms a set of tissue layers that migrate and fold to form an early embryo. Images of embryos provide a means of comparing embryos of different ages, and species. To this day, embryo drawings are made in biology undergraduate developmental biology lessons.Comparing different embryonic stages of different animals is a tool that can be used to infer relationships between species, and thus biological evolution. This has been a source of quite some controversy, both now and in the past. Ernst Haeckel pioneered in this field. By comparing different embryonic stages of different vertebrate species, he formulated the Recapitulation theory. This theory states that an animal's embryonic development follows exactly the same sequence as the sequence of its evolutionary ancestors. Haeckel's work and the ensuing controversy linked the fields of developmental biology and comparative anatomy into comparative embryology. From a more modern perspective, Haeckel's drawings were the beginnings of the field of evolutionary developmental biology (evo-devo).The study of comparative embryology aims to prove or disprove that vertebrate embryos of different classes (e.g. mammals vs. fish) follow a similar developmental path due to their common ancestry. Such developing vertebrates have similar genes, which determine the basic body plan. However, further development allows for the distinguishing of distinct characteristics as adults.".
- Embryo_drawing thumbnail Gray41.png?width=300.
- Embryo_drawing wikiPageExternalLink displayAbstract?fromPage=online&aid=135297.
- Embryo_drawing wikiPageExternalLink 74.1hopwood.pdf.
- Embryo_drawing wikiPageExternalLink survivalOfTheFakest.pdf.
- Embryo_drawing wikiPageExternalLink 970203.web.pdf.
- Embryo_drawing wikiPageID "10273".
- Embryo_drawing wikiPageRevisionID "591197406".
- Embryo_drawing hasPhotoCollection Embryo_drawing.
- Embryo_drawing subject Category:Biological_techniques_and_tools.
- Embryo_drawing subject Category:History_of_evolutionary_biology.
- Embryo_drawing type Ability105616246.
- Embryo_drawing type Abstraction100002137.
- Embryo_drawing type BiologicalTechniquesAndTools.
- Embryo_drawing type Cognition100023271.
- Embryo_drawing type Know-how105616786.
- Embryo_drawing type Method105660268.
- Embryo_drawing type PsychologicalFeature100023100.
- Embryo_drawing type Technique105665146.
- Embryo_drawing comment "Embryo drawing is the illustration of embryos in their developmental sequence. In plants and animals, an embryo develops from a zygote, the single cell that results when an egg and sperm fuse during fertilization. In animals, the zygote divides repeatedly to form a ball of cells, which then forms a set of tissue layers that migrate and fold to form an early embryo. Images of embryos provide a means of comparing embryos of different ages, and species.".
- Embryo_drawing label "Embryo drawing".
- Embryo_drawing label "Embryonenkontroverse".
- Embryo_drawing sameAs Embryonenkontroverse.
- Embryo_drawing sameAs m.02shf.
- Embryo_drawing sameAs Q1335214.
- Embryo_drawing sameAs Q1335214.
- Embryo_drawing sameAs Embryo_drawing.
- Embryo_drawing wasDerivedFrom Embryo_drawing?oldid=591197406.
- Embryo_drawing depiction Gray41.png.
- Embryo_drawing isPrimaryTopicOf Embryo_drawing.
