此外，左旋和右旋蜗牛可能无法交配，因为它们的扭曲方向不相容。
In addition, perhaps left and right-handed snails cannot mate with each other, having incompatible twist directions.
然而，一些卵壳中会出现反向螺旋的蜗牛，多数情况下是在左旋卵壳中，右旋的出生率惊人地高。
However, some broods possess a few snails of the opposing hand, and in predominantly sinistral broods, the incidence of dextrality is surprisingly high.
几乎无法想象左旋本身会给左旋者带来任何不利之处。 然而，左旋与右旋蜗牛彼此间实际上并不呈真正的镜像对称....。。
But left- and right-handed snails are not actually true mirror images of one another…
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