A $DNA$ molecule in which both strands have radioactive thymidine is allowed to duplicate in an environment containing non-radioactive thymidine. What will be the correct number of $DNA$ molecules that contain some radioactive thymidine after three duplications
AIIMS 1980, Medium
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d (d)Because of semiconservative method of $DNA$ replication only $2$ molecules of $DNA$ will have some radioactive thymidine.
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It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for genetic material. This is written by