2 G-1 Kenji: You did a lot of fieldwork, observing chimpanzees in the wild. Are they in any way like human beings? ュ Jane: Chimpanzees and humans have a lot in ユ common. We know today that the DNA of humans and chimps differs by justa little over one percent. Their brains are very much like ours and much of their behavior is like ours. Like us, they also have much to learn in their childhood. The members of a chimp family are very close, often helping one another. They can feel sad, happy, afraid, and angry.