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Chapter 14: Q. 31 (page 368)

If the rate of replication in a particular prokaryote is 900 nucleotides per second, how long would it take 1.2 million base pair genomes to make two copies?

Short Answer

Expert verified

22.2 minutes, or 1333 seconds.

Step by step solution

01

Introduction 

Prokaryotic DNA is circular in form, with one origin from which replication proceeds. It is semi-conservative and bidirectional. Like eukaryotes, prokaryotes have double-stranded DNA that unwinds at a replication fork to start the replication process. Prokaryotes replicate using three fundamental steps. Initiation, elongation, and termination are their names.

02

The explanation for the answer. 

Replication can happen in the prokaryotic bacterium E. coli at a pace of 1,000 nucleotides per second. Human eukaryotic DNA duplicates at a rate of 50 nucleotides per second, in contrast. So, the answer is 22.2 minutes or 1333 seconds.

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Most popular questions from this chapter

In eukaryotes, what is the DNA wrapped around? a. single-stranded binding proteins b. sliding clamp c. polymerase d. histones

An adult with a history of tanning has his genome sequenced. The beginning of a protein-coding region of his DNA reads ATGGGGATATGGCAT. If the protein-coding region of a healthy adult reads ATGGGGATATGAGCAT, identify the site and type of mutation.

Prokaryotes have a single circular chromosome while eukaryotes have linear chromosomes. Describe one advantage and one disadvantage to the eukaryotic genome packaging compared to the prokaryotes.

Describe the structure and complementary base pairing of DNA

You isolate a cell strain in which the joining of Okazaki fragments is impaired and suspect that a mutation has occurred in an enzyme found at the replication fork. Which enzyme is most likely to be mutated.
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