Question

In this activity, you will demonstrate your understanding of antipiracy tell elongation at the replication forks. Keep in mind that the two stands in a double helix are oriented in opposite directions, that is, they are Drag the arrows onto the diagram below to indicate the direction that DNA polymerase III moves along the parental (template) DNA stands at each of the two replication forks. Arrows can be used once.

Answer 1

DNA polymerase III can mainly supply nucleotides to the 3' end of a new DNA strand as the two parental DNA strands of a double helix are antiparallel (go from 3' to 5' in contrary directions), the direction that DNA polymerase III go to on each strand that results from an individual replication fork would be in the opposite direction.

Let's take for instance, in the replication fork at the left, the fresh strand on top is being produced from 5' to 3', as this will result in the DNA pol III moving away from the replication fork. In like manner, the new strand at the bottom of the replication fork as seen in the attached image is being developed from 5' to 3'. Since, the bottom parental strand is going in the contrary path of the top parental strand, DNA pol III is observed going toward the replication fork.

In conclusion, an individual replication fork, one strand is produced not in the direction of the replication fork, and one strand is produced in the direction of the replication fork. If both both replication forksis observed properly, an individual new strand is established in the exact direction on both regions of the replication bubble.