Homologous Structures or Organs: The structure which are similar in their morphology, anatomy, genetics and embryology but dissimilar in their functions are called homologous structures.
These structures are inherited from a common ancestor; they have similar developmental pattern in the embryos; they have the same type of bones, blood vessels, nerves, muscles etc. but they have do dissimilar functions in different animals. The relationship between homologous structures is called homology.
Analogous structures: Sometimes animals belonging to different group live in the same habitat. Hence they lead a similar type of life. This leads to the development of superficially similar structures to lead a similar way of life. As these animals belong to different groups, anatomically the structures are different. The structures are which are superficially similar but anatomically dissimilar doing similar functions called analogous structures.
Homologous structures vs Analogous structures
Similar in anatomy
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Dissimilar in anatomy
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Doing dissimilar functions
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Doing similar functions
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Develop in related animals
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Develop in unrelated animals
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Inherited from a common ancestor
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Not inherited from common ancestor
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Similar developmental pattern
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Developmental pattern is not similar
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Similar structure and Origin
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Dissimilar in structure and origin
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