Originally Posted by ChuckBukowski
Not every species evolves, species will only evolve when they need to. Modern alligators and crocodiles are much the same as they were millions of years ago because they are able to function quite well in their environments. Also, species dont necessarily evolve drastically. Its like the finches Darwin discovered in the Galapagos, most looked exactly the same except for small variations in the beak structures which enabled one species to better catch insects and another to better crunch seeds. The coelacanth was obviously able to survive in its environment but not necessarily thrive. Conditions for evolution have to be stable for very long periods of time with subtle changes in the environment. Exceptions are organisms that breed at an extremely high rate such as virus, bacteria, dandelions etc. Lucy was a different species. A chimpanzee will never evolve into a human being no matter how long you give it becasue it is a different species. We did not evolve from monkeys, we are our own separate species. It sounds like that chimp you were referring to was the result of a mutation, having an extra or not enough chromosones.