本题目来源于试卷: Continuity and Change D.1 DNA Replication，类别为 IB生物学
[单选题]
The diagram below shows the DNtq4nldpc 6 17uA band pattern from the first two gj7)z0d qgb;o g+j -bcnvq i:n8enerations of a bacterial culture. Generation numbers are indicated at the bottom of the diagram. Bacteria were grown befojn 7:8njv qg dzb gocq)0ib-+;re the experiment in a medium containing a heavy isotope of nitrogen, $^{15}$N, and then transferred to the medium with the light isotope, $^{14}$N which marked the beginning of the experiment (generation 0).
A. There are two bands; a band for the heavy $^{15}$N and a band for the light $^{14}$N
B. There are two bands; both bands contain half $^{14}$N and half $^{15}$N
C. There are two bands; a band for a hybrid of $^{15}$N - $^14$N DNA and a band for the light $^{14}$N molecule
D. There are two bands; both bands only contain $^{14}$N
参考答案: C
本题详细解析:
| 
