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Answer:
Because the synthesis of one of the two new strands will be in the 5'-3 'direction (synthesis continues), however, the new DNA strand goes through a review, to see if there is any error, the review is done in the 3' direction -5 '(discontinued synthesis).
The same happens when the new DNA strand is made in the 3'-5 'direction (discontinuous synthesis) where the revision is made in the 5'-3' direction.
Explanation:
As you may already know, in DNA replication, a DNA molecule (which is formed by two nucleotide strands) has its separate strands. Each strand will be used as a template for the formation of new DNA strands. In addition, each DNA strand will be reviewed to ensure that there were no replication errors.
When the new DNA strand is synthesized in the 5'-3 'direction (continuous synthesis), the revision is done in the 3'-5' direction (discontinued synthesis). When the new tape is synthesized in the 3'-5 'direction (discontinuous synthesis), the review is done in the 5'-3' direction (continuous synthesis).
