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Homology

Homology

(Science: embryology, genetics) two anatomical structures or behavioural traits within different organisms which originated from a structure or trait of their common ancestral organism.

The structures or traits in their current forms may not necessarily perform the same functions in each organism, nor perform the functions it did in the common ancestor. They may even have become completely unused and therefore vestigial.

Compare: analogy.


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Help a philosopher...!

... a bit; what kind of process would lead to the development, from non-human primates, of new cognitive abilities resulting in a very strong homology between their cognition and our cognition? I need to take to the class an article/paper or something similar that draws on this kind of scenarios, ...

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by ocki
Tue Mar 10, 2009 11:31 pm
 
Forum: Evolution
Topic: Help a philosopher...!
Replies: 4
Views: 507

6 sources of evidence for evolution

... phylogetic relationship between similarly-morphological species. It, in fact, could be used by creationist to support their view (after all if homology suggests evolutionary relationships, does not analogy seemingly oppose it?) bullet #2 in and of itself does not unrefutably suggest a vast ...

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by achung89
Mon Sep 22, 2008 6:54 am
 
Forum: Evolution
Topic: 6 sources of evidence for evolution
Replies: 2
Views: 2068

6 sources of evidence for evolution

... remains of organisms provide a historical record of life on earth. Reveals the vast time scale over which the process of evolution has occured. 3. Homology: structures in closely-related species have been a similar underlying structure that appears to have been modified by natural selection in ...

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by rajvandam
Mon Sep 15, 2008 3:53 am
 
Forum: Evolution
Topic: 6 sources of evidence for evolution
Replies: 2
Views: 2068

Re: pharmaceutical discovery techniques

... but from what i can tell from the abstract of that article is that it is a study outlining the difficulties in modelling a CCK receptor through homology techniques which is still a structure based approach. I basically want to know if there is such a thing as a functional based approach in drug ...

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by scott25
Sun Aug 17, 2008 10:40 pm
 
Forum: Molecular Biology
Topic: pharmaceutical discovery techniques
Replies: 2
Views: 474

pharmaceutical discovery techniques

... aspects can be used for developing or discovering new pharmaceutical products. i have found loads of stuff on structure based approaches such as homology modeling and ligand structure based approaches but i can never find any information on how the function of this GPCR could be used to identify ...

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by scott25
Sun Aug 17, 2008 12:21 pm
 
Forum: Molecular Biology
Topic: pharmaceutical discovery techniques
Replies: 2
Views: 474
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