Ladekjaer-Mikkelsen A S, Jensen H, Rosenberg T, Jørgensen A L
Aarhus Universitet, Institut for Human Genetik.
Ugeskr Laeger. 1995 Aug 28;157(35):4808-12.
Normal colour vision is trichromatic and is mediated by the blue, green and red visual pigments present in the corresponding blue, green, and red cone cells of the retina. The red and green pigment genes have evolved from an ancestral pigment gene and reside in a head-to-tail tandem array on the long arm of the X chromosome. This arrangement and a high degree of homology predispose to illegitimate recombination between the red and green pigment genes explaining the various forms and the high frequency of red-green colour vision defects.
正常的色觉是三色性的，由视网膜相应的蓝、绿和红视锥细胞中存在的蓝色、绿色和红色视觉色素介导。红色和绿色色素基因由一个祖先色素基因进化而来，位于X染色体长臂上的头对头串联阵列中。这种排列方式和高度的同源性使得红色和绿色色素基因之间容易发生非法重组，这就解释了红绿色觉缺陷的各种形式和高发生率。
