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Unformatted text preview: shaped replication fork. Note: The DNA shown in Figure 4 is not depicted in a helical shape; it is drawn in a parallel form for ease of understanding. 3. RNA primers bring in respective base pairings to each of the original strands. DNA polymerase is an enzyme that binds the base pairings together, but it can only work in the direction of 5#x2032 to 3#x2032. 4. The other original strand also has to be put together 5#x2032 to 3#x2032 so it will be put together in a backward fashion. 5. In order to bind those base pairings to the original strand, a different enzyme called DNA ligase is necessary. This is called the lagging strand since it basically takes longer to put together. Figure 4. DNA Replication....
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- Fall '10