Question

If DNA synthesis goes from 5'→3', will both strands always go the same way?

1) Yes, both strands will always go the same way
2) No, the strands can go in opposite directions
3) Cannot be determined

Answer 1

During DNA replication, one strand (the leading strand) is synthesized continuously in the 5' to 3' direction, while the other strand (the lagging strand) is synthesized in the opposite direction, in small fragments called Okazaki fragments.

Step-by-step explanation:

During DNA replication, one strand (the leading strand) is synthesized continuously in the 5' to 3' direction, which is the same direction as the replication fork movement. The other strand (the lagging strand) is synthesized in the opposite direction, in small fragments called Okazaki fragments, with the 5' to 3' synthesis occurring away from the replication fork. Therefore, the strands do not go the same way and can go in opposite directions.