在法国拉斯科洞穴中发现了冰河时代晚期的绳索,这条绳索由向右旋转的纤维捆成,因此它是由右撇子编成的。
The late Ice Age rope found in the French cave of Lascaux consists of fibers spiraling to the right, and was therefore tressed by a righthander.
在锥实螺的例子中,研究表明右旋基因是在卵的形成期表达的。
In the case of Lymnaea peregra, studies indicate that a dextral gene is expressed during egg formation.
这种结合不对称、解剖学和偶然性的进化论机制并未提供一种充分的解释,以说明蜗牛的右旋何以会成为主要的旋向。
This evolutionary mechanism combining dissymmetry, anatomy, and chance does not provide an adequate explanation of why right-handedness should have become predominant.
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