homological - Hutchinson encyclopedia article about homological Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
1,952,285,707 visitors served.
forum mailing list For webmasters
?
New: Language forums
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

homologous
(redirected from homological)

   Also found in: Dictionary/thesaurus, Medical, Legal, Encyclopedia 0.01 sec.

homologous

In biology, a term describing an organ or structure possessed by members of different taxonomic groups (for example, species, genera, families, orders) that originally derived from the same structure in a common ancestor. The wing of a bat, the arm of a monkey, and the flipper of a seal are homologous because they all derive from the forelimb of an ancestral mammal.

The wing of a bird and the wing of an insect are not homologous, even though they are both used for flying, because they are not derived from the same structure.



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.
?Page tools
Printer friendly
Cite / link
Email
Feedback
?Sign in SSL protected
Email:
Password:
Register

? Mentioned in ? References in periodicals archive
 
at Cambridge University in homological algebra in 1957, publishing his first paper in that area in 1959,
at Cambridge University in homological algebra in 1957, publishing his first paper in that area in 1959,
An emphasis on homological algebra allows basic notions on complexes to be presented as soon as modules have been introduced, and an extensive last chapter on homological algebra can form the basis for a follow-up introductory course on the subject.
 
Hutchinson browser? ? Full browser
 
 
Hutchinson Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Copyright © 2010 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.