Final answer:
Prokaryotic chromosomes typically have one origin of replication, starting replication at a single point and proceeding in both directions around their circular structure, as opposed to the multiple origins found on eukaryotic linear chromosomes.
Step-by-step explanation:
The question pertains to the number of origins of replication present in various types of chromosomes and DNA structures. The correct answer to which typically only has one origin of replication is b) Prokaryotic chromosomes.
Prokaryotic chromosomes generally consist of a single, circular chromosome that begins replication at one origin and continues in both directions until the entire chromosome is duplicated. In contrast, eukaryotic chromosomes are linear and have multiple origins of replication, allowing replication to occur at several places simultaneously along the chromosome.