AIPMT PRELIMS2001Botany-Genetics
AIPMT PRELIMS 2001 Botany DNA Replication MCQ Question
Type: MCQ-conceptual-Medium-Class 12
E. Coli about to replicate was placed in a medium containing radio active thymidine for five minutes. Then it was made to replicate in a normal medium. Which of the following observation shall be correct :-
A
Both the strands of DNA will be radio active
B
One strand radio active
C
Each strand half radio active
D
None is radio active
Correct Answer
Option A
Detailed Explanation
Only one strand will be radioactive as the DNA replication is semi-conservative, incorporating radioactive thymidine into one strand.
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