B is the answer I strongly believe
Step 1: Isolate the two kinds of DNA.
Step 2: Treat the plasmid and foreign DNA with the same restriction enzyme.
Step 3: Mix the foreign DNA with chopped plasmids.
Step 4: Add DNA ligase.
Melanin conveys some UV protection
<span>He tried to combine the disease resistance of one plant with the food-producing capacity of another.
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