The lagging strand of DNA is made in small segments called Okazaki fragments,each one requiring a primer to begin synthesis,whereas the leading strand,synthesized continuously,does not require a primer to initiate the daughter strand.

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Both the leading and lagging strands require a primer to initiate DNA synthesis. The leading strand is synthesized continuously, while the lagging strand is synthesized in Okazaki fragments, each needing a new primer.

The Lagging Strand of DNA Is Made in Small Segments