1. Cones that gained the missing genes began expressing the new photopigment . 2. If a person lacks two types of photopigments , they are considered monochromats. 3. In plants, bilins also serve as the photopigments of the photoreceptor protein phytochrome. 4. The outer cell segment contains a photopigment . 5. Photosensitive ganglion cells contain the photopigment melanopsin. 6. The subject should first be evaluated to identify which photopigment they need to gain trichromacy. 7. Three different photopigments have been retained and are sensitive to UV, blue, and green. 8. In medical terminology, " photopigment " commonly refers to the photoreceptor proteins of the retina. 9. People lacking the three types of photopigments are said to have complete color blindness or achromatopsia. 10. Therefore, there is a functional redundancy between the three photopigments in the photoentrainment pathway of mammals.
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