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Question

The sticky ends of a fragmented DNA molecule are made up of ________.

A
Calcium salts
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B
Endonuclease enzyme
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C
Unpaired bases
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D
Methyl groups
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Solution

The correct option is C Unpaired bases
  • After digestion of DNA with certain restriction enzymes like EcoRI, there is one unpaired overhanging strand produced at each end.
  • This overhang will easily re-attach to other ends that are complementary to it, thus known as "sticky ends".
So, the correct answer is option C.
2076684_927856_ans_d89738448b174bffaa1609e23f843b2e.png

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