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Spines

spinescent

ending in a spine, modified to form a spine.


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Recessive and dominant genetics - Pitx1 case study

... were able to modify the regulatory regions of the mouse Pitx1 gene to be similar to those of a freshwater stickleback that does not produce pelvic spines. v this is what my text says on the basic diagram "This Scientists generated mouse embryos in which the Pitx1 gene was mutated, making the ...

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by scienceguy914
Mon Sep 08, 2014 1:44 am
 
Forum: Genetics
Topic: Recessive and dominant genetics - Pitx1 case study
Replies: 0
Views: 424

The Keyhole Paradox: Challenging universal common descent.

... growth until all male felines had barbed penises. However, there's a problem with that. The female cat's reproductive system relies upon the spines of the male's penis in the first place. Unlike most mammals, cats have a specific physical trigger for ovulation, and that trigger is the spines. ...

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by irtree
Tue Feb 07, 2012 12:02 am
 
Forum: Evolution
Topic: The Keyhole Paradox: Challenging universal common descent.
Replies: 5
Views: 4995

Re: What is this animal?

... image it looks to me like a "swim bladder" used by fish and other marine organisms for buoyancy and stability, also the tail has "spines" running along it, no way it is a Croc. Btw what part of the World are you in?

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by vk4vfx
Sun Jul 03, 2011 9:33 pm
 
Forum: Zoology Discussion
Topic: What is this animal?
Replies: 12
Views: 10992

Help me for Biomimicry!

Hedgehogs? I would surmise that some of the sea urchins etc do, as their spines seem to be radial all over, so potentially could go in any direction, including over their mouths??

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by Julie5
Sat Dec 04, 2010 3:31 pm
 
Forum: General Discussion
Topic: Help me for Biomimicry!
Replies: 3
Views: 1570

What are these little guys?

I think that are just new branches. Let it grow for a while and you will see ;) But as it seems to me to have thorns/spines (I don't know, how is it called in English), it probably won't be a flower

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by JackBean
Fri Apr 23, 2010 10:30 am
 
Forum: Botany Discussion
Topic: What are these little guys?
Replies: 1
Views: 1137
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