This experiment will test the differences in appearance, shape, size, color and DNA between saltwater algae and freshwater algae.The genetic makeup of saltwater algae and freshwater algae should be different because saltwater usually dehydrates plants. There was a genetic change to the freshwater algae to make it able to survive in saltwater, but this change may not be in the one gene we are looking at. The specific gene we will be looking at is RBcL which is found in the chloroplasts of the cell.