c-DNA probes are copied from the mRNA molecules with the help of

restriction enzymes

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reverse transcriptase

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DNA polymerase

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adenosine deaminase

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Solution

The correct option is B reverse transcriptase
cDNA is complementary DNA produced by using mRNA as a primary template. Reverse transcriptase produces DNA with RNA as the template. So, it is a main requirement for the production of cDNA.

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