Essential Cell Biology, 4th Edition

Published by Garland Science
ISBN 10: 0815344546
ISBN 13: 978-0-81534-454-4

Chapter 6 - DNA Replication, Repair, and Recombination - Questions - Page 203: Question 6-1 A

Answer

It will take 8 seconds for 4 and 5, and 7 and 8 would never collide.

Work Step by Step

The distance between 4 and 5 is 280nm, when $280\div0.34$ = 824. Since eukaryotic replication forks move at about 100 nucleotides per second, it would take about 8 seconds. The forks 7 and 8 are moving away from each other so they would never collide.
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