Why is DNA replication continuous and discontinuous in a replication fork?
DNA-dependent DNA polymerase catalyzes DNA polymerization only in one direction, that is, 5′ → 3′. DNA strands are anti-parallel and have opposite polarity. So on template strand with polarity 3′ → 5′ DNA replication is continuous white on the template strand with polarity 5′ → 3′ replication is discontinuous.