那是完全色盲的一个条件，忍受着看世界就是不同程度的灰色阴影。
It is a condition known as achromatopsia and sufferers see the world in different shades of grey.
色盲在猴群中上升是因为全色觉需要两种不同的视蛋白基因，它们存在于X染色体上。
The colour blindness in the monkeys arises because full colour vision requires two versions of the opsin gene, which is carried on the X chromosome.
色盲在猴群中上升是因为全色觉需要两种不同的视蛋白基因，它们存在于X染色体上。
The colour blindness in the monkeys arises because full colour vision requires two versions of the opsin gene, which is carried on the X chromosome.
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