In 1963, two enzymes responsible for restricting the growth of bacteriophage in Escherichia coli were isolated. These enzymes were

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DNA polymerase and restriction endonuclease.

methylase and restriction endonuclease.

lyase and protease.

ligase and helicase

answer is B.

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Detailed Solution

In the year 1963, the two enzymes responsible for restricting the growth of bacteriophage in Escherichia coli were isolated. One of these enzymes added methyl groups to DNA, while the other cut DNA which were called restriction endonuclease.

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