Humans do NOT have distinct cone types to respond to light wavelengths associated with the color:
A)red.
B)green.
C)yellow.
D)blue.

Question

Quizplus · Accepted Answer

Yellow light is not a unique wavelength in the electromagnetic spectrum, but rather a combination of red and green wavelengths. Therefore, humans do not have a distinct cone type for detecting yellow light, but rather rely on a combination of signals from red and green cones.

Humans Do NOT Have Distinct Cone Types to Respond to Light