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 ndexlibzak(m1q+ *yh*g73p . the invekit+ s hu 0sfw*;56uzjer5 s.zstigations by Hershey and Chase possible?e0 5z5ks s+sr wfit*uj6;uh.z
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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