What is the direction of synthesis of DNA?

3' to 5'

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5' to 3'

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Varies in eukaryotes

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Varies in prokaryotes

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Solution

The correct option is B 5' to 3'
DNA synthesis takes place by the enzyme DNA dependent DNA polymerase which catalyzes polymerization only in one direction, which is 5' to 3' direction.
On 3' to 5' strand of DNA, DNA polymerase works in 5' to 3' direction in a discontinuous manner and creates fragment that are later joined by the DNA ligase enzyme.

So, the correct answer is option B.

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