An A/C polymorphism was identified at nucleotide-11 from the acceptor site of IVS3 of the phenylalanine hydroxylase gene. This polymorphism can be detected easily by means of single strand conformation polymorphism analysis.

• 在苯丙氨酸羟化酶基因IVS3的3'端－11位有一个A/C多态性位点，应用SSCP分析可进行简便检测。