THEORY OF EVOLUTION

[param]

How does the "THEORY OF EVOLUTION" is supported through classification of animals and plants..........
Your help too answer this question will be very appreciated..............

[MrMistery]

Plants and animals higher up the chain have superior characteristics than those lower on the evolution chain. For example, a frog's heart has 3 chambers, while a bird's heart has 4. A bird has steady methabolism, while a reptile does not

[biostudent84]

I wouldn't say it makes them "superior." A bird's heart has four chambers because it needs four chambers. An amphibian can survive with three, so it only creates three.

[James]

We classify organisms into categories that have similar characteristics, eg mammals, reptiles etc. These cateogories have formed from divergence from common ancestors. Thus, those organisms classified more closely together have diverged less from each other through natural selection, and are closer related.

[Linaeus]

I dont get the question?

[reallyuniquename]

Actually, the interesting thing about the evolutionary tree is the huge variation it has potential to be. "Trees" can be grown from many different sources. Some will use a phenotype (physical characteristic), or section of DNA to make their "trees" grow branches. The difficult thing is using fossil records as the trunk of ancestors because than it becomes a theory.
The strange thing about the "trees", and the part where they lose credibility is when you select for different characteristics to compare with to grow the "tree." For instance, a certain molecule that is common in the trunk's genotype can be used to show how despite diverging, the molecule from descendents remains the same, linking the "tree" together. Given, this seems to make sense at face value, but select for a different molecule, and you get a whole new tree. Even with physical characteristics, the same is true. The variation amoung what the tree should look like is near endless. It creates alot of chaos when researched. I encourage you all to look into it.

Ben