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A heavy DNA (N^(15)N^(15)) of E.coli is ...

A heavy DNA `(N^(15)N^(15))` of E.coli is allowed to replicated in `N^(14)` medium for 80 minutes. What would be the proportions of light `(N^(14)-N^(14))` and hybrid densities of DNA `(N^(14)-N^(15))` molecules?

A

`50:50`

B

`75:25%`

C

`87.5:12.5%`

D

all hybrid

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The correct Answer is:
C
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