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Vestigial

vestigial

refers to an organ or part (for example, the human appendix) which is greatly reduced from the original ancestral form and is no longer functional or is of reduced or altered function.

Vestigial structures provide a clue to the evolutionary history of a species because they are remnants of structures found in the ancestral species.


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On the number of limbs.

I've been wondering, what does limit the number of limbs?. For example, nearly all vertebrates are cuadrupedal or have vestigial limbs that add up to 4 limbs, why is it that there are no, let's say, hexapedal ( it would be possible for a, let's say, 4 legs bird? )

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by elvex1
Mon Feb 04, 2013 6:21 pm
 
Forum: Evolution
Topic: On the number of limbs.
Replies: 7
Views: 528

Re: Theories - Origin of Life

... processes. What I have found in any philosophical dogma, is that sooner or later contradictions set in. This is so exemplified in this cave animal vestigial and Junk DNA argument. Here we have a theory that, at it’s core, describes a process of random mutations of a genome eventually producing ...

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by scottie
Thu Dec 29, 2011 12:57 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 548
Views: 534352

Re: Theories - Origin of Life

EnricoPallazzo Thanks for your interjection, it’s nice to have a fresh view presented. Firstly could we nail down this point. The introduction of vestigial organs is an argument for degeneration in an already existing function, whatever the cause of that degeneration. It does not stand up as an ...

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by scottie
Sun Dec 25, 2011 1:01 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 548
Views: 534352

Re: Theories - Origin of Life

... blame the author for that but you blame me. That is a delightful little bit of “shoot the messenger” rhetoric.:) 4) The argument though is that vestigial organs militate against functional design. If they are vestigial then they must have had a use initially, therefore this is an argument for ...

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by scottie
Fri Dec 23, 2011 3:39 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 548
Views: 534352

Re: Theories - Origin of Life

... faith. It’s the science bit that I question. You deal with issues that wbla3335 cited so I will take your responses as from him. the presence of vestigialities (which include noncoding DNA) is BOTH support for macro evolution and evidence against design. As support for macro evolution, vestigialities ...

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by scottie
Mon Dec 19, 2011 3:32 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 548
Views: 534352
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