Please click on the link to go to the National Geographic Article "Was Darwin Wrong?" It will provide you with information you'll need to complete your assignment. http://ngm.nationalgeographic.com/ngm/0411/feature1/
Also take a look at: http://www.pbs.org/wgbh/evolution/
It has some wonderful links: video, games, images and articles that will help you understand evolutionary processes in my more detail.
