Problem:
In terms of information the chromosome may be thought of as a very long double helix; during the mitotic DNA replication the duplicated chromosome is composed of two chromatids.
If tritiated, thymidine is used to label the new DNA strand during replication, _____.
A. Both chromatids will be radioactively labeled at metaphase
B. Only one of the two chromatids will be radioactively labled at anaphase
C. Neither chromatid will be radioactively labeled
Please explain the answer too.