DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.
radial. 1  a. Of, relating to, or arranged like rays or radii. b. Radiating from or converging to a common center. c. Having or characterized by parts so arranged or so radiating. 2  Moving or directed along a radius. 3  Anatomy Of, relating to, or near the radius or forearm. 4  Developing symmetrically about a central point.
Answer Wiki. The radial displacement is the component of a change in position in the radial direction. The radial velocity is the component of a change in position per unit time in the radial direction. That's probably what your textbook said. The misunderstanding surely lies with the definition of radial.