Later, when the new strand is itself copied ... whereas the other is called the lagging strand. The leading strand is synthesized continuously, as shown in Figure 5. In contrast, the lagging ...

DNA is always synthesized in the 5'-to-3' direction, meaning that nucleotides are added only to the 3' end of the growing strand. As shown in Figure 2, the 5'-phosphate group of the new nucleotide ...