Tardigrade
Question
Biology
Bacteria were cultured in a medium containing heavy nitrogen (15N) until all the DNA was labelled. These bacteria were then grown in a medium containing only normal nitrogen (14N) for five generations. The percentage of cells 1 containing 15N in each generation was estimated. Which curve provides evidence that DNA replication is semi-conservative? <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/biology/132cd0e76c7cf4daf0869e051736f989-.jpeg />

Q. Bacteria were cultured in a medium containing heavy nitrogen ( $^{15} N$ ) until all the $D N A$ was labelled. These bacteria were then grown in a medium containing only normal nitrogen ( $^{14} N$ ) for five generations. The percentage of cells $1$ containing $^{15} N$ in each generation was estimated. Which curve provides evidence that $D N A$ replication is semi-conservative?

1214 179 Molecular Basis of Inheritance Report Error

A

I

B

II

C

III

D

IV

Solution:

Correct answer is (c) III