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प्रश्न
Which statement is not true about DNA replication?
पर्याय
It proceeds in a 5’-to-3’ direction only.
One strand of new DNA is replicated faster than the other strand at the replication fork.
DNA can only replicate at one point on a chromosome at one time.
Replication can only begin at a special origin of replication.
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उत्तर
DNA can only replicate at one point on a chromosome at one time.
Explanation:
DNA replication is a highly efficient process that occurs simultaneously at multiple locations along a chromosome, rather than at just one point. These specific starting sites are called origins of replication, and in eukaryotic organisms, there are hundreds or even thousands of these origins per chromosome. This allows the cell to copy its massive amount of genetic material in a matter of hours; without multiple replication points, copying a single human chromosome would take weeks.
