In the case of Lymnaea peregra, studies indicate that a dextral gene is expressed during eggformation.
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。
2
In the case of Lymnaea peregra, studies indicate that a dextral gene is expressed during eggformation;
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；
3
'the protein had been identified before and it was linked to eggformation but by examining it closely we have been able to see how it controls the process,' he added.