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What does compatible ends mean?

Answer and explanation

Correct answer: DNA ends that can join with each other

Compatible ends are DNA termini whose shapes and exposed bases allow two fragments to align and associate. In many cloning experiments they are complementary sticky ends produced by the same restriction enzyme; their overhanging bases pair through hydrogen bonds. DNA ligase can then form covalent phosphodiester bonds across the aligned backbone, making a stable recombinant molecule. Some blunt ends can also be ligated, although they lack complementary overhangs and are generally less efficient. Therefore option A is correct. The other choices incorrectly describe ends as proteins, salts, or structures that necessarily break.

Related tags

Compatible EndsSticky EndsDna LigationCutting Of DnaProcesses Of Recombinant Dna TechnologyBiotechnologyClass 11 Mcq

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