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To: Doctor Stochastic
A few color-blind individuals may improve a group's survival chances even though taken separately, these individuals may be less fit.

There is an exterme example of this. There is an inherited condition in which the individual is born without retinal cone cells -- complete color blindness. Even worse, the cones are the primary agent of our central vision, where we see detail. These people have extremely poor visual acuity. I have a nephew with this condition, and he was first diagnosed as blind.

Interestingly, there is a Pacific island where about 20 percent of the population has this condition. A side effect is extremely good night vision, which enables these people to dive for fish at night, adding more than their share of food to the island's resources.

1,389 posted on 12/05/2004 9:28:06 AM PST by js1138 (D*mn, I Missed!)
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To: js1138

"Interestingly, there is a Pacific island where about 20 percent of the population has this condition. A side effect is extremely good night vision, which enables these people to dive for fish at night, adding more than their share of food to the island's resources."

God is doing some special creation right now to provide fish with night vision goggles and Uzis. Tell your friends on the island to be careful.

"Doggoneit, my fin got stuck in the full auto switch"


1,392 posted on 12/05/2004 10:06:27 AM PST by shubi (Peace through superior firepower.)
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