多项选择题
A.The clinical diagnosis may or may not be specific
B.The inheritance mode is not clear for the isolated cases
C.The progression（进展） of condition can take several decades
D.Locus heterogeneity（位点差异性）
单项选择题 In the following mutation screening strategies，which is the most effective and breadth-covered（覆盖广） in nowadays？（）
单项选择题 Which statement about essential elements（要素） in a genetic testing for clinicians is NOT true：（）
单项选择题 Diseases due to mutations（突变） in different classes of proteins function for：（）