How Many Colors Can We See?

The video explains how color perception varies due to the number and type of cone receptors in the eyes. Most humans have three types of cones, allowing them to see about one million colors. Color blindness occurs when one or more cone types are missing, affecting color distinction. The video also discusses the genetic basis of color vision, noting that color blindness is more common in males due to its linkage to the X chromosome. Additionally, some women may have a fourth type of cone, enabling them to perceive up to 100 million colors, a condition known as tetrachromacy.

What is the primary function of rods in the human eye?

• To detect color in bright light

• To perceive fine details

• To see in low light and in black and white

• To transmit signals to the brain

How many colors can most humans perceive due to trichromacy?

• About 10,000 colors

• About 1 million colors

• About 100 million colors

• About 100 colors

What is dichromacy?

• The ability to perceive 100 million colors

• The ability to see in low light

• A condition where one type of cone is missing

• The presence of a fourth type of cone

Why is color blindness more common in biological males?

• They have fewer rods than females

• They have a genetic mutation for tetrachromacy

• They have only one X chromosome

• They have more cones than females

What unique ability might some women have due to a genetic mutation?

• Seeing in complete darkness

• Perceiving at least 100 million colors

• Distinguishing between all shades of gray

• Having enhanced night vision