In the case of Lymnaea peregra, studies indicate that a dextral gene is expressed during egg formation.
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。
Butt at one time, handedness (twist direction of the shell) was equally distributed within some snail species that have become predominantly dextral or, in a few species, predominantly sinistral.
然而现在已经变为右旋占多数的蜗牛种类，其旋向性（壳的螺旋方向）一度也曾均衡分布，在某些种类中，甚至左旋曾占优势。 。
In the case of Lymnaea peregra, studies indicate that a dextral gene is expressed during egg formation;
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；
For the sake of stress relaxation, the tectonic boundary between these two different terrains (i. e. the Lingshan structure zone) expressed as a dextral fault in late period.
由于应力弛张作用，使两地体间的构造分界线（灵山构造带）后期表现为左旋断层性质。
Karayulgun dextral strike-slip fault, which is a thin-skinned structure, adjusted the deformation difference located at frontal range of Quele area.
喀拉玉尔滚右旋走滑断层为薄皮构造，调节了却勒地区东、西段前缘的变形差异。
Karayulgun dextral strike-slip fault, which is a thin-skinned structure, adjusted the deformation difference located at frontal range of Quele area.
喀拉玉尔滚右旋走滑断层为薄皮构造，调节了却勒地区东、西段前缘的变形差异。
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