color+blindness

** #1. What is color blindness? **
===** Color blindness is the inablility to see certain colors. It is also called color vision deficiency. Many people may think that color blind people could only see in black and white. This is not true. Actually, this form of seeing only black and white is fairly rare. It is called total color blindness when you can only see things in shades of gray. Red/ green color blindness is the most common form of it. This is when you cannot distinguish the green and red colours. **===

#2. What are some problems color blindness could cause?
=== One thing that would be a major problem for color blind people is seeing the colors of the traffic lights. An even bigger problem than traffic lights would be caution lights. At least for traffic lights, you would know that the top would be red, the middle would be yellow, and the bottom would be green. For caution lights, ther is no top, bottom or in between. The colors are either yellow or red, both of which have different meanings. For small children like kindergartners, using colored pencils or crayons would be troublesome. Sine you can't distinguish color when you are color blind, a kindergartner may have trouble coloring things. For example, when coloring the sun, a color blind child might grab a green crayon instead of the yellow or orange. Another problem is that when a color blind person is cooking meat, that person wouldn't know whether the meat is still raw or if it is burning to a crisp. ===

** #3. What makes color blindness occur **
=== Human eyes have cones, or color sensitive receptors which have single visual pigments for red, green and blue lights. Color blindness or other color disturbances are caused when the amount of pigments are correct in a cone, or if one, some, or all cones are missing. ===

These are a possible set of chromosomes for a color blind person.

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