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Vertebrate

vertebrate

(Science: zoology) One of the vertebrata. an animal with a backbone


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What are some reasons that prove adaptations are not designe

... tube - easy to choke. But my favorite example is one that creationists, stupidly, used for a long time as an example of "design" - the vertebrate eye, especially in comparison with the cephalopod eye. On a gross level, they are very similar but the cephalopod eye is much better designed. ...

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by thoffnagle
Thu Jan 31, 2013 1:04 am
 
Forum: Evolution
Topic: What are some reasons that prove adaptations are not designe
Replies: 12
Views: 6389

organs shape

... of an organ primordium measure the concentration gradients of specific signaling molecules, such as Dpp in the Drosophila wing disc and Shh in the vertebrate limb bud (Day and Lawrence 2000). In immature small primordia, the gradients are steep and cells continue to grow and divide. Since the source ...

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by animus
Thu Jun 28, 2012 4:41 pm
 
Forum: Human Biology
Topic: organs shape
Replies: 1
Views: 4498

Re: Evolutionary advantage of seeing 'upright'

... the signals coming in from your optic nerve - at no point does it try to reconstruct what your retina is seeing. If you're interested in this, the vertebrate visual system is one of the best studied and best understood aspects of neuroscience. There are many great books that explain not only what ...

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by TheSunshineEmperor
Wed May 23, 2012 5:03 am
 
Forum: Evolution
Topic: Evolutionary advantage of seeing 'upright'
Replies: 17
Views: 9009

caveolae and caveolin1

1.caveolae which are a special type of lipid raft, are small (50–100 nanometer) invaginations of the plasma membrane in many vertebrate cell types, especially in endothelial cells and adipocytes. have several functions in signal transduction.[1] They are also believed to play a role ...

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by taruntbiotech
Mon May 14, 2012 5:10 pm
 
Forum: Cell Biology
Topic: caveolae and caveolin1
Replies: 1
Views: 3150

HSD, GED, and a career in paleontology/biology

So I want a career in vertebrate paleontology and/or biology, but I have some issues that I fear will prevent me from achieving my dream. I guess I'll come out and say it: I got kicked out of high school for missing too much time. It's ...

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by tiredeyes
Fri Jan 27, 2012 8:19 am
 
Forum: General Discussion
Topic: HSD, GED, and a career in paleontology/biology
Replies: 0
Views: 727
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