In a hair pin model of RNA, which nitrogen base is present at the short end?
A
Adenine
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B
Guanine
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C
Thymine
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D
Cytosine
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Solution
The correct option is B Guanine A small hair pin RNA or short hairpin RNA is a sequence of RNA that makes a tight hairpin turn that can be used to silence target gene expression via RNA interference (RNAi). It contains guanine at its short end.