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What are blunt ends?

Answer and explanation

Correct answer: Straight-cut DNA ends without overhangs

The governing concept is the structure of DNA ends produced when a restriction enzyme cuts both strands at corresponding positions. A blunt end is a double-stranded DNA end with no single-stranded nucleotide overhang. The two strands terminate at the same level, giving the molecule a relatively straight or flush end; therefore option A is correct. This differs from a sticky end, where the cuts are staggered and a short single-stranded overhang remains. Option B is incorrect because blunt ends describe DNA, not unusually long RNA. Option C refers to neither DNA strand structure nor restriction cutting, and option D is too broad because a blunt end is not simply any single-stranded end.

Related tags

Blunt-EndsDna-CuttingRestriction-EnzymesBiotechnologyCutting Of DnaProcesses Of Recombinant Dna TechnologyClass 11 Mcq

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