A DNA molecule of Escherichia coli is heavy (full labelled with N 15) and is allowed to duplicate in a medium containing N14. In first generation, the two daughter DNA molecules:-

Question

A DNA molecule of Escherichia coli is heavy (full labelled with N 15) and is allowed to duplicate in a medium containing N14. In first generation, the two daughter DNA molecules:- (A) have same density but do not resemble their parent DNA (B) have different densities but resemble their parent DNA (C) have different densities and also do not resemble the parent DNA (D) same in density and resemble their parent DNA

Tardigrade Admin · Accepted Answer

Correct answer is (a) have same density but do not resemble their parent DNA

Q. A DNA molecule of Escherichia coli is heavy (full labelled with N15) and is allowed to duplicate in a medium containing N14. In first generation, the two daughter DNA molecules:-

have same density but do not resemble their parent DNA

have different densities but resemble their parent DNA

have different densities and also do not resemble the parent DNA

same in density and resemble their parent DNA

Correct answer is (a) have same density but do not resemble their parent DNA

Q. A DNA molecule of Escherichia coli is heavy (full labelled with $N^{15})$ and is allowed to duplicate in a medium containing $N^{14}$ . In first generation, the two daughter DNA molecules:-