"Wordsmith" <wordsmith at rocketmail.com> wrote in message
news:cddcc385.0110311016.46a0e76c at posting.google.com...
> There's a gender factor also. I've heard it said men are much more prone
to
> color-blindness than women. Is this a fable or is there meat on the bone?
>> Wordsmith :)
it's true, there's a genetic form of red-green blindness that only occurs on
the Y chromesome, so only males get it...
B.