Question

Assuming that each replication fork moves at a rate of 500 base pairs per second, how long would it take to replicate the

e. coli chromosome (with 4.6 million base pairs) from a single origin of replication?

Answer 1

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Answer 2

`9200` seconds

`2.55` hours

Step-by-step explanation:

Given,

Rate of movement of replication fork across the base pair is equal to
`500` base pair per second.

The total number of base pair in the chromosome of an e. coli bacteria
`= 4.6` million

`= 4.6 * 10^6\\`

Now, time taken by replication fork to replicate the entire e. coli chromosome

is equal to total number of base pairs in the chromosome of an e.coli bacteria divided by the rate of replication

`= (4.6* 10^6)/(500) \\= 9200` seconds

`= (9200)/(60*60)\\= 2.55` hours