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The correct example of HaeIII is linked with what?

Answer and explanation

Correct answer: GGCC and blunt ends

Direct answer: A, GGCC and blunt ends. HaeIII is a restriction endonuclease that recognizes the palindromic sequence 5′-GGCC-3′ and cuts in a way that leaves blunt ends, with no single-stranded overhang. This is the exact fact needed. Option A is correct because it gives both the recognition sequence and the type of DNA ends. Option B is wrong: GAATTC is the recognition sequence of EcoRI, which produces sticky ends, not the standard HaeIII example. Option C is wrong: AAGCTT is associated with HindIII, and a hormone is unrelated to restriction-site description. Option D is wrong: GGATCC is associated with BamHI, while starch is not a product or feature of HaeIII recognition. Blunt ends can be joined, but they generally lack the easy complementary pairing found in sticky ends, so ligation may be less efficient. Exam cue: HaeIII means GGCC and blunt; EcoRI means GAATTC and sticky.

Related tags

HaeiiiGgccBlunt Ends

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