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  • Recombinant DNA Technology: Key Enzymes & Their Roles
    The two main enzymes necessary for making recombinant DNA are:

    * Restriction enzymes: These enzymes act like molecular scissors, cutting DNA at specific sequences called restriction sites. They create sticky ends, which are short, single-stranded overhangs that can base-pair with complementary sequences.

    * Ligase enzymes: These enzymes act like molecular glue, joining the sticky ends of two different DNA fragments together. They form phosphodiester bonds between the sugar-phosphate backbones of the DNA fragments, creating a continuous DNA molecule.

    In summary: Restriction enzymes cut the DNA, and ligase enzymes join the pieces together. This process allows for the insertion of a gene of interest into a vector, creating recombinant DNA.

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