What bands will be observed in a cesium chloride gradient after two rounds of replication?

What bands will be observed in a cesium chloride gradient after two rounds of replication?

Q. What bands will be observed in a cesium chloride gradient after two rounds of replication?

A.            One light, one medium and one heavy band

B.            One light and one medium band

C.            One medium band

D.            One medium and one heavy band           

Answer: One light and one medium band

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