2. How would it change if cones were damaged instead? 3. Which would you choose to keep-rods or cones--and why?
4. Would this choice change if you were a nonhuman animal? (Or, for a more realistic version: Cone-
rod dystrophy is an actual condition in which both photoreceptors in the retina gradually
deteriorate. How would this affect vision? Which symptoms are related to the rods and which to the
cones?)