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We were extremely fortunate to see these two white lionesses in the wild as they are so rare.
White lions are rare in the wild, because the coloring is the result of a genetic mutation in which two copies of the gene must be present for the white coat to show up in the animal. These two sisters are both carriers of the gene, but only one of them proved out and has a white coat.
The white lions, also called blond lions, are the same species as African lions (Panthera leo). Their blondish-white coloring is the result of a recessive mutant gene. So cubs born to more tawny-colored lions could carry the recessive mutant gene (without showing a blond coat) and pass it on to future generations. Like most recessive genes, if an offspring gets two copies of that genetic mutation, the trait, such as blondness, will be expressed and show up.
"Shores of Avalon" Kevin MacLeod (incompetech.com)
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