hay_you:
If you read your post it is all assumptions. There is nothing about facts in that.
No. It's simple common sense.
But if you go with this type of reasoning, you said that the unmutated ones some would not reproduce (that is an assumption) because they were the 'Normal ones that were the only ones that reproduced. Also DNA even from 2 mutated animals in a few generations, will have offspring that is like the 'normal' one. So the tendency for that animals species is that they will revert back to where they were.
No. That's a major error. There's no tendency for species to "revert" to what they were previously once a genetic mutation is there. I don't know where you got that idea. Most of the time, genes are just copied to the next generation, with no changes. If a mutation happens once it will be copied to all subsequent generations.
So in the population the 'normal' ones would always be in the majority. Besides, with 'evolution' eventually some animal has to become something different that what it was.
You're different from your mother.
Because this is an ongoing thing that would mean that , over time more and more of these mutant (transitional) ones would be in the fossil record.
If you dug up your ancestors, you'd find that none of them were the same as their mothers.
But because as you said these mutations are random, there would also be a great variety , of different kinds of mutant animals. They should be found in the fossil record.
I already explained this point to you. Go back and re-read my previous posts. If you are having trouble understanding, please ask questions. Don't just contradict and go back to your previous incorrect assumptions. That just makes you look stupid.
In 'evolution' just because , something is useful and because mutations are random, from the heredity, of animal , these mutations would still be happening.
Yes. Every now and then. Mutations only occur rarely. In fact, sex is a much more important way of generating genetic diversity, but it is harder to understand so I'm starting on the simple stuff for you.
But today we consider mutations to be bad.
I explained this to your previously, too. Go back until you understand this simple point:
most mutations are neutral - neither good nor bad. Of those that aren't neutral, many are bad, but a few will be good. The good ones will be naturally selected and come to dominate the population over time. If you don't understand this, please ask me some questions.
And humans are humans, chimps are chimps. We don't see the steps in between. This is the same in the fossil record.
There are at least a dozen known fossils of pre-human species.
But we wouldn't expect any steps between chimps and humans, because humans aren't descended from chimps. Do you understand this point?
Regarding mutations, let me give you a simple analogical example. In the folllowing, I will assume that each animal is represented by a number: 0 or 1 or 2. 0 means a "normal" animal, and "1" means an animal that has a favorable mutation, "2" means an unfavorable mutation. Let's take a small population of 3 animals of the species. We start with:
0 0 0
(3 unmutated animals). Suppose these animals all reproduce asexually at the same time, by cloning 2 exact copies of themselves, then the original generation all dies at the same time. So, the next generation will be:
00 00 00
Suppose in the very next generationl by random change one of them mutates:
0000 0000 0020
One of these animals has a mutation that is harmful, so it doesn't survive to reproduce. The next generation is
00000000 00000000 000000
and we're back to a set of animals with no mutations. Note that to see animal "2" in the fossil record there's only one chance for it to be fossilised, since it only lives for one generation and it is 1 out of 12 animals that has a chance of being fossilised. 11 out of the 12 animals are "normal". The chances of fossilisation of the mutant are
tiny.
The next generation is:
0000000000100000 0000000000000000 000000000000
Now we have one animal with a favorable mutation. This animals survives and faithfully copies the mutation to the next generation:
0000000001100000 00000000 000000
But wait! What has happened here? Oh look. A new disease has struck that wipes out 50% of animals of type "0" in every generation, while animals with favorable mutation "1" survive to reproduce. The next generation is:
00001111000 0000 000
The disease continues to ravage the "0" population. The next generation is:
00111111110 00 00
Now, the "1" animals are the dominant animals in the population. The next generation is
01113111111111111 0 0
The "1"s are even more dominant, and look! There's a new mutation: a "3" animal. Who knows what that will do? The next generation is:
111111111111111111111111111111
Looks like the "3" was a harmful mutation. The disease has now wiped out the "0" population completely, leaving only "1"s. The "0" species is extinct and now we have a new species of "1" animals.