Meselson and Stahl's Experiment is Continued for Sixth Generations in Bacteria, the ratio of Heavy Strands 15N/15N :Hybrid15N/14N - Biology

If Meselson and Stahl's experiment is continued for sixth generations in bacteria, the ratio of Heavy strands 15N/15N :Hybrid15N/14N : light 14N/14N containing DNA in the sixth generation would be 

A. 1:1:1 

B. 0:1:7  

C. 0:1:15 

D. 0:1:31

D. 0:1:31

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Class 12 Biology Sample Paper Solution-2021-22