[[White lions owe their colouring to a recessive allele.]]
Leucism is a reduction in the pigmentation of the skin.
BBC: Rare white lion cub appears at Hertfordshire wildlife park
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。