1940年，遗传学家阿尔弗雷德？斯特蒂文特发表了一篇论文，声称基因决定了你能否卷舌头——能卷舌头的父母会生出能卷舌头的子女。
In 1940 , geneticist Alfred Sturtevant published a paper claiming that genetics determined your ability to roll your tongue - parents who could roll their tongues were likely to have children who could as well .
斯特蒂文特