IAT IISER2019BiologyMolecular Basis of Inheritance
An E. coli whose DNA is fully labeled by ¹⁵ ~N is grown in a medium containing ¹⁴ NH ₄ Cl . What will be the percentage of hybrid ( ¹⁵ ~N / ¹⁴ ~N ) and light ( ¹⁴ ~N / ¹⁴ ~N ) DNA molecules at the end of 80 minutes (assume that doubling time of E . coli is 20 minutes)?
Options
- A25 % hybrid and 75 % light
- B50 % hybrid and 50 % light
- C0 % hybrid and 100 % light
- D12.5 % hybrid and 87.5 % light
Correct answer
D. 12.5 % hybrid and 87.5 % light
Step-by-step solution
No solution available.