Replication is a process that synthesizes a new strand of complementary DNA. Which of the following statements is true about replication origins?
a. In both prokaryotes and eukaryotes, replication proceeds in both directions from each origin.
b. The two strands of DNA at the origin are separated, allowing the formation of a replication bubble.
c. Eukaryotic chromosomes have a single origin, but bacterial chromosomes have many origins.
d. Bacterial chromosomes have a single origin, but eukaryotic chromosomes have many origins.
a
a, b, and d
b
a, b, and c
c
b, c, and d
d
a, c, and d