cDNA probes are copied from the messenger RNA molecules with the help of
restriction enzymes
reverse transcriptase
DNA polymerase
adenosine deaminase
B.
reverse transcriptase
Reverse transcriptase is an enzyme used by retroviruses to from complementary DNA (cDNA) from their RNA. The resulting DNA is then inserted into the chromosome of the host cell.
Restriction anzymes is an enzyme produced chiefly by certain bacteria, that has the property of cleaving DNA molecules at or near a specific sequence of bases.
DNA Polymerase is an enzyme that synthesizes DNA molecules from deoxyribonucleotides, the building blocks of DNA.
Adenosine deaminase is an enzyme which catalyzes the deamination of adenosine to inosine.