Evolution can be defined as "change over time." But does change over time really mean evolution? How would you define it? Download the resource document in "Related Items" below to record your definition of evolution as well as data from this resource so you can determine for yourself whether or not there is evidence for evolution.
To get started, play Cell Phone Evolution in this first activity.
Now that you've sequenced the cell phones in chronological order, would you consider the changes in cell phones over time to truly represent the concept of evolution? What evidence would you look for to determine if real cells have evolved? Start by reading the section below, which considers a theory of cell evolution.
Click the cell image to open a link to access additional information about endosymbiosis and evolution. The link opens in a new window. Close the window when you are finished reading about the endosymbiont theory to return to the resource.