You Briefly Expose Bacteria Undergoing DNA Replication to Radioactively Labeled

question 50

Multiple Choice

You briefly expose bacteria undergoing DNA replication to radioactively labeled nucleotides.When you centrifuge the DNA isolated from the bacteria,the DNA separates into two classes.One class of labeled DNA includes very large molecules (thousands or even millions of nucleotides long) ,and the other includes short stretches of DNA (several hundred to a few thousand nucleotides in length) .These two classes of DNA probably represent

• A)leading strands and Okazaki fragments.
• B)lagging strands and Okazaki fragments.
• C)Okazaki fragments and RNA primers.
• D)leading strands and RNA primers.

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Definitions:

Salt Domes

Geological formations created when a thick bed of evaporite minerals (primarily salt) is pushed upward by the pressure of overlying rock layers.

Less Dense

Describes materials that have a lower mass per unit volume compared to others, often leading to buoyancy in fluids.

Turbidity Currents

Underwater density currents that move swiftly downslope due to increased density from suspended sediments.

Submarine Fans

Large, underwater sediment deposits that resemble an open fan, typically found at the base of continental slopes.