If relaxed circular DNA is designated R ,supercoiled circular DNA is designated S) and linear DNA is designated L ,arrange these conformations in order of increasing rate of sedimentation during centrifugation.
A)L ,S ,R
B)S ,L ,R
C)S ,R ,L
D)R ,S ,L
E)L),R),S)

Question

If relaxed circular DNA is designated R ,supercoiled circular DNA is designated S) and linear DNA is designated L ,arrange these conformations in order of increasing rate of sedimentation during centrifugation.
A)L ,S ,R 
B)S ,L ,R 
C)S ,R ,L 
D)R ,S ,L 
E)L),R),S)

Quizplus · Accepted Answer

Linear DNA sediments slower than relaxed circular DNA, which in turn sediments slower than supercoiled DNA due to differences in compactness and shape.

If Relaxed Circular DNA Is Designated R ,Supercoiled Circular DNA