According to the Trichromatic Theory of Color Vision, People Who

question 549

Multiple Choice

According to the trichromatic theory of color vision, people who have red-green color blindness have:

• A) far fewer cones than people with normal color vision.
• B) normal red-sensitive cones, but lack blue-sensitive cones.
• C) normal blue-sensitive cones, but their other cones are sensitive to either red or green but not both.
• D) color receptors that are limited to the blue-yellow opponent pair.

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