Description
白化现象是鸟类的一种基因突变的结果，这种遗传突变阻止色素到达鸟的部分甚至全部羽毛。白化的程度因鸟的基因组成而异。但鸟的皮肤和眼睛仍保持正常的色素和颜色。白化病则截然不同。白化病患者全身都是白色的，眼睛和皮肤都是粉红色的(源自皮肤或虹膜内的毛细血管)。白化病的起源也不一样：它们是因为身体中的酪氨酸酶出现问题，导致无法正常制造黑色素，黑色素是赋予皮肤、羽毛和眼睛颜色的色素。 比起白化病患者，白化现象更容易见到。下次你去野外观鸟，可以多留意有白色斑点或羽毛颜色明显减淡或缺失的鸟类。它可能是任何种类的鸟。
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