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analogy |
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analogy, in biology, the similarities in function, but differences in evolutionary origin, of body structures in different organisms. For example, the wing of a bird is analogous to the wing of an insect, since both are used for flight. However, there is no common ancestral origin in the evolution of these structures: While the wings of birds are modified skeletal forelimbs, insect wings are extensions of the body wall. Although insects and birds do have a very remote common ancestry (more than 600 million years ago), the wings of the two groups evolved after their ancestries had separated. See also homology homology (hōmŏl`əjē) ..... Click the link for more information. . analogy 1. Biology the relationship between analogous organs or parts 2. Logic maths a form of reasoning in which a similarity between two or more things is inferred from a known similarity between them in other respects How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| BMP receptor signaling occurs in a manner analagous to the TGF-[beta] pathway, with Smad1/5/8 binding to the type I BMP receptor, followed by phosphorylation of these factors upon ligand activation (Miyazono et al. Within a framework of limited technology and circumscribed social and aesthetic aspirations, vernacular solutions tended to prevail and in many cases are directly analagous to a particular climate. This approach for handling measurement error is analagous to errors-in-variables regression (Heise, 1975, 1986; Fuller & Hidiroglou, 1978; Warren, Keller-White, & Fuller, 1974) in which regression coefficients are estimated in the presence of errors in measurement. |
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