Question 60

(Multiple Choice)

Use the following figure to answer the questions below.
Use the following figure to answer the questions below.    -In the late 1950s,Meselson and Stahl grew bacteria in a medium containing heavy nitrogen (¹⁵N)and then transferred them to a medium containing ¹⁴N.Which of the results in the figure above would be expected after one round of DNA replication in the presence of ¹⁴N? A)A B)B C)C D)D E)E
-In the late 1950s,Meselson and Stahl grew bacteria in a medium containing "heavy" nitrogen (¹⁵N)and then transferred them to a medium containing ¹⁴N.Which of the results in the figure above would be expected after one round of DNA replication in the presence of ¹⁴N?


A)A
B)B
C)C
D)D
E)E

Answer