M.O.A 这种有机分析器令人印象深刻的原因之一是：它不仅检验了氨基酸是否存在，而且还测试出了氨基酸的旋向性。

One reason the M.O.A., the organic analyzer is so impressive is that it tests not just for the presence of amino acids but also for the handedness of amino acids.

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卵子受精之前，这种基因会产生一种蛋白质，这种蛋白质存在于卵子的细胞质中，它控制着细胞分裂的模式，从而控制着旋向性。

Before egg fertilization, the gene produces a protein, found in the cytoplasm of the egg, that controls the pattern of cell division and thus handedness.

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构成生命体的许多关键分子都有一个特定的导向，或者说是旋向性：脱氧核糖核酸右旋，氨基酸左旋。

Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left.

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