gene point mutation 点突变 ; 突变
Most other animals have this functioning DNA but at some point in our history, a mutation disbled the gene - whilst leaving behind its remnants as junk DNA.
其他大多数动物都有这种有用的DNA，不过在我们的进化史中，有个改变让这种基因失效了——不过还是留下了一点残余，成了废料DNA。
Objective To investigate the relationship between the point mutation of ABCB4 gene exon 23 and the intrahepatic cholestasis of pregnancy (ICP).
目的：探讨A BCB4 基因外显子23点突变与妊娠期肝内胆汁淤积症（ ICP）发病的关系。
Applying RNase Protection assay, the point mutation in the RB gene was observed.
运用核酸酶保护试验观察rb基因的点突变现象。
应用推荐