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) Prokaryotic DNA is single-stranded. B) Prokaryotic DNA is much smaller than eukaryotic DNA. C) Prokaryotes do not replicate their DNA. D) Prokaryotic DNA is replicated more slowly than eukaryotic DNA.

B) Prokaryotic DNA is much smaller than eukaryotic DNA.

Explanation:

In biology, one event is correlated with the other event or structure like observed in the DNA. The genetic material of a eukaryote and a prokaryote differ from the other in many ways:

1. The prokaryote possesses only one chromosome which is double-stranded and circular.

2. The eukaryotic organism exhibits more than one chromosome which is not circular.

Since the prokaryotes possess very less amount of DNA then the eukaryotes therefore during DNA replication, the DNA of prokaryote require only one origin of replication from where the replication will start.

Thus, Option-B is correct.

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