28.下列何者為全球最常見的單基因疾病(single-gene disorder)?
(A)囊性纖維化(cystic fibrosis)
(B)X染色體脆折症(fragile X syndrome)
(C)苯酮尿症(PKU,phenylketonuria)
(D)地中海貧血(海洋性貧血)(thalassemia)

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統計: A(75), B(67), C(29), D(399), E(0) #2625543