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More Reptile Genetics Info Below
Evolution??????????????????
I really don't really believe in Evolution.
What about Adaptation? It makes more sense that an Animal can change certain genetics. Instead of changing a mammal into a reptile. I think animals stay the same species, but only make little changes like patterns and body parts. For example, a certain turtle learns to adapt to the sea for 2000 years and transform into a sea turtle. I think that every Class of animals has a limit in a genetic change.
What do you think of this? By the way I am a very good Christian, I'm not an Athiest.
Lets get a couple of misconceptions sorted out first:
1. The animal does not decide or choose how its genome is going to adapt to its environment. What happens is that poorly adapted individuals do not get to pass on their genes on to future generations in the population.
2. Genomic adaptation does not occur in individuals; it occurs in breeding populations. In other words, if the gene does not get passed on to future generations it disappears.
3.The environment is always changing. Sometimes it happens quickly, but usually it happens too slowly to notice. Adaptations need to take place to keep up with the changes in the environment.
In your example of turtles it is quite likely the sea turtles and fresh water turtles will lead different lives. Lets say the fresh water turtles environment slowly starts to dry out over many thousands of years. To adapt, its flippers change to legs and it becomes able to survive quite well by living constantly out of water. They adapt to eating plants.
Over many thousands of years the sea turtles discover uninhabited islands where they can safely lay their eggs so adapt to living all their life in the ocean and only coming out to breed. They get bigger in size so they can eat bigger fish and so there is less risk of them being eaten in turn.
All the changes are made by small adaptive changes.
Any two groups of animals that end up being as different as in this scenario are invariably classified as two different species.
The question I have for you is; what do you think it is that limits the possible genetic change for each 'class' of animal?
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Greg Graziani "Reptile Genetics" part1
