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Taylor, Woods and Hughes labeled Vicia DNA by allowing new DNA synthesis in the presence of radioactive thymine. After DNA replication (S phase of the cell cycle), it was observed that | |
A. | only one chromatid of a chromosome was labeled [Wrong Answer] |
B. | both chromatids of a chromosome were labeled [Correct Answer] |
C. | both (a) and (b) [Wrong Answer] |
D. | neither chromatid was labeled [Wrong Answer] |