Question

Taylor, Woods, and Hughes conducted an experiment on Vicia faba. They utilized radioactive 3H-thymidine to label newly synthesized DNA in order to observe the process of replication. The data they obtained, as shown in the figure above, provided evidence supporting semi-conservative replication. Now, let's predict what their results would have been if replication had been conservative or dispersive. a. In each sister chromatid, one DNA strand would be labeled, and the other would be unlabeled. b. In one sister chromatid, both DNA strands would be labeled. In the other sister chromatid, both DNA strands would be unlabeled. c. In each sister chromatid, parts of both strands would be labeled, while other parts would be unlabeled. d. All of the above answers are possible.

          Taylor, Woods, and Hughes conducted an experiment on Vicia faba. They utilized radioactive 3H-thymidine to label newly synthesized DNA in order to observe the process of replication. The data they obtained, as shown in the figure above, provided evidence supporting semi-conservative replication. Now, let's predict what their results would have been if replication had been conservative or dispersive.
a. In each sister chromatid, one DNA strand would be labeled, and the other would be unlabeled.
b. In one sister chromatid, both DNA strands would be labeled. In the other sister chromatid, both DNA strands would be unlabeled.
c. In each sister chromatid, parts of both strands would be labeled, while other parts would be unlabeled.
d. All of the above answers are possible.

Added by Mark L.

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