Which statement is not true about DNA replication in eukaryotes?
A replication fork occurs at each growing point of the. replicating chromosome
Replication of the entire genome takes about ten minutes
Eukaryotes have numerous different chromosomes, with replication occurring in each at the same time
Replication occurs at the rate of about 500-5000 base pairs per minute
A
Replication occurs at the rate of about 500-5000 base pairs per minute
B
Replication of the entire genome takes about ten minutes
C
Eukaryotes have numerous different chromosomes, with replication occurring in each at the same time
D
A replication fork occurs at each growing point of the. replicating chromosome
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Solution
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It takes almost 1 house for replication to complete in eukaryotes. The cells of humans and other eukaryotes have organized nuclei enclosing a set of chromosomes. The typical human chromosome has about 150 million base pairs that the cell replicates at the rate of 50 pairs per second. At that rate, it would take the cell over a month to copy a chromosome. The fact that it takes only one hour is because of multiple replication origins. Replication simultaneously proceeds from many different points on the chromosome, and enzymes join the sections together to form the final intact copy.
So, the correct option is 'Replication of the entire genome takes about ten minutes'.
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