Final answer:
The trichromatic theory of color vision states that our photoreceptors are specially tuned to transduce red, blue, and green light.
Step-by-step explanation:
The trichromatic theory of color vision states that our photoreceptors are specially tuned to transduce three different wavelengths of light: red, blue, and green. This theory suggests that our cones, which are the photoreceptor cells in our retina, are responsive to these three colors. By combining the activities of these different cones, we are able to perceive the full spectrum of colors.