Where are your Answer Choices?:-/
Answer:
Adenine and guanine are purines, while thymine, cytosine and uracil are pyrimidines.
Hope this helps! Sorry no one answered your question sooner :(
Light positioning include;
1. Extrinsic muscles.
2. Pupil.
3. Accommodation.
4. Cornea
5. Ciliar bodies.
Sensory processing include;
1.Photoreceptor.
2. Occipital cortex.
3. Bipolar cells.
4. Ganglion cells.
5. Amacrine cells.