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"A circular molecule of DNA containing the genome of species X contains 1 million base pairs. If the rate of DNA synthesis at each replication fork is 100,000 nucleotides per minute, how much time will it take to replicate the molecule

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Answer:

The answer is 20 minutes.

Explanation:

Firstly, the circular DNA molecule contains 1 million base pairs which means there are 2 million nucleotides in the genome. Secondly, if it takes one minute for replicating 100,000 nucleotides. Therefore, it could take about 20 minutes for completing the replication of the full genome.

  • 100,000 per minute.
  • 2,000,000/ 100,000 = 20 times, thus it needs 20 minutes.

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