11. Deer have normally have trichromatic vision. 12. After five months of gene therapy treatment, the monkeys began to acquire trichromatic color vision. 13. The trichromatic theory is strictly true when the visual system is in a fixed state of adaptation. 14. RGB or trichromatic white LEDs uses multiple LED chips emitting red, green, and blue wavelengths. 15. Nonetheless research shows a significant negative correlation between the two traits in the majority of trichromatic species. 16. Trichromatic lighting provides much higher light output for a given amount of electrical energy than does incandescent lighting.17. Our trichromatic color vision evolved by duplication of the long wavelength sensitive opsin, found on the X chromosome. 18. :Most mammals have dichromatic color vision : they see color but not as well as us trichromatic primates. 19. In humans, there are three types of cones sensitive to three different spectra, resulting in trichromatic color vision. 20. In 1801 trichromatic theory, based on the observation that any color could be matched with a combination of three lights.