Grandmama’s teeth Is there biological evidence for innate language capacity?

If an animal is innately programmed for some type of behaviour, then there are likely to be biological clues. It is no accident that fish have bodies which are streamlined and smooth, with fins and a powerful tail. Their bodies are structurally adapted for moving fast through the water. The same is true of whales and dolphins, even though they evolved quite separately from fish. Similarly, if you found a dead bird or mosquito, you could guess by looking at its wings that flying was its normal mode of transport.