本题目来源于试卷: Unity and Diversity A.2 Nucleic Acids，类别为 IB生物学
[单选题]
How did radioisotopes help make the i*pwl5fs 0b ,is (*faa-n prkb91km1sh)0lotinvestigations by Hershey and Chase possible?1bsh0pa 9ot1*(k-) lmn rfkia
A. They identified the helical shape of DNA.
B. They tracked elements that are incorporated into cells.
C. They separated mixtures according to size and charge.
D. They stopped DNA replication for base sequencing.
参考答案: B
本题详细解析:
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