What description of dna replication is correct?
a. the two strands of dna separate and restriction enzymes cut up one strand. then the dna uses these pieces to synthesize two new strands out of the old one.
b. the two strands of dna separate, and each one receives a complementary strand of rna. then the new rna strands serve as templates for the assembly of many new dna strands.
c. ligase separates the two strands of the dna double helix. then dna polymerase synthesizes the leading strands and primase synthesizes the lagging strand.
d. helicases separate the two strands of the double helix, and dna polymerases use each of the original strands as templates to create two new strands.