I am almost secure that this affirmation aren't exactly true but I want to know which of these statements is more near to a description of how evolution works:
- The evolution has an exactly target and always progress to it, each generation the childs are more close to make complete a certain task, that is beacuse evolution is like "directional".
For example: The task is be 10cm taller. Each generation the race become 1mm taller up to complete the task.
- The evoultion is random but the specie (or natual selection) try to reach a target, each generation has random traits but only benefical traits tends to "survive" and get offpring.
For example: In order to survive the task is be 10cm taller. Some childs are half cm taller and other childs are half cm smaller, the last ones die naturally and only the taller ones survive enough to get offspring.