Restriction enzymes recognize and cut:
a.
random dna base-pair sequences
c.
single-stranded dna
b.
double-stranded dna
d.
rna

double -stranded DNA

Explanation:

A restriction enzyme is a DNA-cutting enzyme that recognizes specific sites in DNA. Many restriction enzymes make staggered cuts at or near their recognition sites, producing ends with a single-stranded overhang. If two DNA molecules have matching ends, they can be joined by the enzyme DNA ligase

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