Bio-Physics (M.Phil./Ph.D.) 2017 Panjab University Entrance Exam With Answers

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39.

Double chained DNA strand is made radioactive in both its chains. It is allowed to replicate twice in non-radioactive medium. The result would be

A: All strands have radioactivity
B: Half the strands have radioactivity
C: Three strands have radioactivity
D: Radioactivity is absent in all strands

The answer is: B