Prokaryotic organisms have a single origin of replication, whereas eukaryotic organisms have many origins where replication occurs simultaneously. which of the following is the most probable reason for this observation? a. prokaryotes do not replicate their dna. b. prokaryotic dna is much smaller than eukaryotic dna. c. prokaryotic dna is replicated more slowly than eukaryotic dna. d. prokaryotic dna is single-stranded.