Question

In eukaryotic replication, replication takes place on both strands at each end of the bubble, with the two replication forks spreading outward. Eventually, the replication forks of adjacent replicons run into each other, and the replicons fuse to form long stretches of newly synthesized DNA.

A) True
B) False

Answer 1

The student's statement about eukaryotic replication being bi-directional with replication forks meeting and forming long stretches of newly synthesized DNA is true.

Step-by-step explanation:

The statement provided by the student about eukaryotic replication is true. In eukaryotic replication, replication starts at multiple origins of replication along the DNA. Helicase enzymes unwind the DNA double helix to create replicating bubbles, or replicons, which have replication forks at either end. As replication proceeds, two replication forks at each bubble move outward symmetricaly. The replication is semi-conservative, which means that one parental DNA strand serves as a template for the new DNA to be synthesized. The leading strand is synthesized continuously, whereas the lagging strand is synthesized in short, discontinuous segments known as Okazaki fragments. Eventually, adjacent replication forks meet, and the DNA fragments are joined together by DNA ligase, resulting in stretches of newly synthesized DNA.