Questions
A heavy DNA is made to replicate for two generations in 14N containing NH4Cl. How many dsDNA molecules shall possess 15N?
a
Two
b
Four
c
Zero
d
One
detailed solution
Correct option is A
Heavy DNA- N15N15It is grown for 2 generations in 14NH4Cl medium. After two generation the DNA formed will have N14N14, N15N14, N14N14, N14N15.Therefore two dsDNA possess N15 , one strand in each DNA molecule but not both the strands of DNA.Talk to our academic expert!
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