A.DNA 聚合酶IB.DNA 聚合酶IIC.DNA 聚合酶III 5′向3′外切功能D.DNA 聚合酶III 3′向5′外切功能
A.DNA聚合酶IB.DNA聚合酶IIC.DNA聚合酶III 5′向3′外切功能D.DNA聚合酶III 3′向5′外切功能
A.1%B.2%C.50%D.100%