極其罕見! 這對雙胞胎一黑一白!
These adorable baby girls are Kalani and Jarani Dean. Despite their different appearances -- Kalani has light skin and blue eyes, and Jarani has dark skin and brown eyes -- they are actually twins.
這對可愛的雙胞胎姐妹名叫卡拉尼和加拉尼。儘管兩人膚色大不相同—--卡拉尼皮膚白皙，而加拉尼的膚色較深--但她們確實是雙胞胎。The girls' parents are Whitney Meyer and Tomas Dean, from Quincy, Illinois. Meyer has been posting pictures of the unique pair since they were born last April.
她們的父母惠特尼·邁耶和托馬斯·迪恩來自伊利諾伊州昆西市。去年4月這對雙胞胎剛出生時，邁耶就發佈了這對雙胞胎的獨特照片。The couple obviously couldn't believe their luck.
顯然，他們不敢相信自己的運氣。
"At first when they were born, I wanted to believe it but it's so rare I didn't think it'd happen to my twins!" Meyer told CNN affiliate KHQA. "But sure enough they're biracial twins!"
邁耶在接收CNN下屬部門KHQA的採訪時表示：“她們剛出生時，我真的不敢相信！這是如此罕見，我不相信會發生我的孩子身上。”
Meyer is white and Dean is black, which explains part of this phenomenon.
邁耶是個白人，而迪恩則是黑人，這解釋了此種現象的部分原因：The twins are dizygotic, which is just the scientific term for fraternal twins. So each baby girl started out as a separate fertilized egg (monozygotic, or identical twins, start off from the same egg and then divide).
兩個孩子是異卵雙胞胎--兩個受精卵發育而成的科學術語。所以是由兩個不同的卵子分別與兩個精子結合而成（而單卵，或者同卵雙胞胎，是由一個受精卵分裂而成的兩個胚胎）。In a fraternal twin situation, each baby inherits a different combination of genes from mom and dad, so when the parents are of different races, it is possible the inherited genes for skin color can differ.
在異卵雙胞胎中，每個胚胎會遺傳父母不同的基因組合，所以如果父母是不同的人種，那麼孩子就極有可能會遺傳不同的膚色基因。Still, the striking occurrence is rare. Geneticist Jim Wilson told the BBC that for mixed-race couples in Britain who are expecting twins, there is about a one in 500 chance that their babies will be born with different colored skins.
然而，這種顯著的不同仍不多見。遺傳學家吉姆·威爾森在接受BBC採訪時表示，在英國生雙胞胎的混血夫妻中，這種膚色不同的概率僅僅是1/500。
