Which one of the following is an accurate statement regarding chromosome replication?

It is semi-conservative

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It occurs during G1 of the cell cycle

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Inactive genes are replicated first.

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It starts with the synthesis of Okazaki fragments.

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Solution

The correct option is A It is semi-conservative
Chromosome replication occurs during the S phase of the cell cycle.

It starts when helicase breaks the hydrogen bonds and unwinds the DNA helix.

Replication of DNA is semiconservative because the newly synthesised DNA molecule has one parental strand conserved and another strand newly synthesised.

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