| Dr.Grass said: -Darwinian Evolution is comprised of 3stages 1) Life developing from matter 2) Changes within a species (bigger, darker, harier) 3) Change from one species to another through the appearance of new features like a new organ or limb. Everyone accepts 2, but there's not much proof at all for 1 and 3. Speak with an evolutionist and he'll keep bringing up evidence for nr 2. |
1) Life Devoping from Matter
Lipids, due to their chemical makeup, tend to attract each other at their heads and tales (while the head and tale repel each other). Lipids form sphere like structures naturally. Its thought that lipids served as the first cell wall. RNA, which consists of basic organic molecules and could have formed randomly, is able to self replicate itself.
The beginning of life could have very well been a RNA strand inside a lipid. When the lipid sphere gets too big, it becomes unstable and breaks into smaller parts, with some of the RNA staying inside spheres. If the RNA mutated to code for lipid production, you have your first reproducing proto cell. As the RNA keeps mutating and stays inside its lipid structure, the RNA continues to add more and more jobs until 'life' as we now it begins.
2) Changes Within a Species
Its good that you accept this fact. However, you draw an innacurate line between small changes and big changes. DNA mutation happen all the time, and over time small changes turn into big ones. This is a long and difficult process, which is why mammals have kept four legs for hundreds of millions of years (minus whales, ofcourse, who have fins that developed from front legs and back legs that became useless).
3) Changes From One Species to Another
There is little difference between the DNA of different species, man and ape have 98% similar DNA. What creates one species from another is the continued changes in DNA from mutations until a point is reached where the DNA and/or mating between species is impossible. A horse and a donkey are a great example of this. Horses and donkeys share a common ancestor and are alike enough so that you can breed the two different species and create a mule, but that mule is infertile. Because the offspring is infertile, horses and donkeys are seperated by a barrier that prevents them from swapping DNA, and the two species will continue to evolve to the point to where all mating impossible.
