Post 277.... They are discussing what makes them homologus and one of your first statements is:
Acim said:
Does not explain what makes them homologous. But tautology is good like that.
When it does in fact state what makes them homologous... through the whole page.
In fact it doesn't state what makes them homologous. I'll quote it again since apparently you are willing to do that.
Biologists use a few criteria to help them decide whether a shared morphological character (such as the presence of four limbs) is likely to be a homology:
Same basic structure
The same bones (though differently shaped) support the limbs of mice and crocodiles. In the illustration of forelimbs at left, homologous bones are colored alike.
So, let's scrutinize this since apparently you disagree with my claim that this is saying of the same thing twice in different words.
- criteria is used to help decide, whether
- shared morphological characters (i.e. structure of the internal parts like bones and organs.)
- is likely to be a homology
> Now homology is not defined in the material, while homologous (traits) is: inherited from a common ancestor
>> So we are referring to traits (or characteristics) that are shared (thus likely preconceived as similar) and have identifiable form, with understanding that this will help decide if organism had common ancestor.
- mice and crocodiles have similar bones that support limbs
- the material references a diagram where it is already determined these bones are homologous.
> It doesn't explain what makes these particular bones homologous. Other than to imply (in not very rational way), that because they have similar bones supporting the limbs, they have common ancestry.
And no, I'm not backing off my statement that you dismissed the definition. Because that is exactly what you are doing.
And your failure to show this is entirely on you. Go ahead and find me the definition within the material for 'homology.' I do not believe you will, and is why I consulted another source for that.
I truly believe the post you are more interested in criticizing me for is #269, and not #277. But as long as you are on 277 only, it will be, I think, easier for me to refute your misguided claims.