然而，有一些打算生孩子的家庭和夫妇可能会面对遗传病的诊断。

However, some families and couples planning to have children may be faced with the diagnosis of a genetic disease.

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策略上的改善使我们有可能在分子水平上对多基因遗传病进行诊断；

The improving of strategies makes it possible to diagnose multi-gene genetic diseases in molecular level.

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限制性酶切片段长度多态性（RFLP）作为共显性的遗传标记，已广泛应用于遗传病的产前诊断。

As a codominant genetic marker, restriction fragment length polymorphisms, referred as RFLPs, has been widely Applied to the prenatal diagnosis of some genetic diseases.

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