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easyeboy
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BEST ANSWER  chosen by asker   |  easyeboy  |  December 28, 2008 04:35 AM
There was a Cambridge University study that discovered this. Normally, people have three types of cone cells for daylight, for detecting different colors. But some women can see extra colors as they have four types of cone cell receptors. They are called tetrachromats. Compared to them, we all are color blind.

See this link:
http://news.softpedia.com/news/Half-of-the-Women-See-More-Colors-than-the-Rest-of-the-People-58351.shtml
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