Prof. Johan Bolhuis: Does Evolution Alone Determine Human Behavior?

Looking at great apes is like looking in a funhouse mirror: we are both a product of evolution, and so alike. Or are we?
According to Johan Bolhuis, professor of cognitive neurobiology at the University of Utrecht, other, ‘lower’ animals are more like us than apes in some respects. For example, children learn to speak by imitating adults. Such vocal imitation does not occur in great apes - but it does in songbirds and dolphins.

If human behavior is not purely determined by evolution, does this mean that people can have free will, even though we don't find anything like it in apes? And if our inner ape is not in charge of our behavior, what is?