I was reading a rather interesting paper some time back that basically had the conclusions that on average women see in more colours than men because they have more variation in the colour filters on their cones in the retina. More prevalent in Nordic races, where men also, can have more than the usual variation, and sometimes more than 3 cone types.
Also different 'races' also see in different colours because, for example 'red' filters will be on a slightly different 'red' frequencies.
And many woman go further having 4 or more distinct colour filters in her cones, and if that is the case her sons will more likely be colour blind. And that works backwards too, if a son is colour blind, it is very likely the mother has 4 or more distinct colour cones.
They had a simple test about counting the colours in the rainbow. Which struck a chord with me, because I've always seen more colours than the standard "Richard Of York..." rhyme.
Also different 'races' also see in different colours because, for example 'red' filters will be on a slightly different 'red' frequencies.
And many woman go further having 4 or more distinct colour filters in her cones, and if that is the case her sons will more likely be colour blind. And that works backwards too, if a son is colour blind, it is very likely the mother has 4 or more distinct colour cones.
They had a simple test about counting the colours in the rainbow. Which struck a chord with me, because I've always seen more colours than the standard "Richard Of York..." rhyme.
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