13.
A:
RNA primes DNA synthesis in prokaryotes and not in eukaryotes
B:
A single origin of replication in prokaryotes and multiple in eukaryotes
C:
Bidirectional replication in prokaryotes and unidirectional in eukaryotes
D:
DNA directed DNA polymerase enzyme in prokaryotes and RNA directed DNA polymerase in eukaryotes
The answer is: B