Question

Replication in prokaryotes differ from replication in eukaryotes for which of the following reasons?

• A. Prokaryotes have telomeres but eukaryotes do not
• B. Prokaryotes produces Okazaki fragments but eukaryotes do not
• C. The rate of elongation during DNA replication is slower in prokaryotes than in eukaryotes
• D. Prokaryotes have a single origin of replication (ori -site) whereas eukaryotes have many ori -sites

Answer 1

The correct option is D Prokaryotes have a single origin of replication (ori -site) whereas eukaryotes have many ori -sites

A. The telomeres are structures at the end of linear chromosomes to keep the chromosome from being degraded by particular molecules in the cell. But in case of prokaryotes have circular chromosomes, there is no need for them. So the telomeres only found in the eukaryotes, linear chromosomes.

B. A building block for DNA synthesis of the lagging strand.

C. The rates are not comparable, as elongation only occurs in prokaryotes.

D. Ori is the DNA sequence that signals for the origin of replication, sometimes referred to simply as the origin. Prokaryotes have a single ori-site and eukaryotes have many ori-sites.

So the correct answer is "D".