KCET · BIOLOGY · STD 12 - 5. Molecular Basis of Inheritance
If E.coli is allowed to grow for 40 minutes in a medium containing \(N ^{15}\), then the number of \(N ^{14} / N ^{14}\) containing DNA would be
- A zero
- B 20
- C 10
- D 2
Answer & Solution
Correct Answer
(A) zero
Step-by-step Solution
Detailed explanation
(A) zero,
If E.coli is allowed to grow for 40 minutes in a medium containing \(N ^{15}\), then the number of \(N ^{14} / N ^{14}\) containing DNA would be zero as medium contains \(N ^{15}\) not \(N ^{14}\).
If E.coli is allowed to grow for 40 minutes in a medium containing \(N ^{15}\), then the number of \(N ^{14} / N ^{14}\) containing DNA would be zero as medium contains \(N ^{15}\) not \(N ^{14}\).
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