Question

Which of the following single-stranded nucleic acid strands could form a hairpin structure in solution? a....

Which of the following single-stranded nucleic acid strands could form a hairpin structure in solution?

a. 5’-TTTGCGATACTCATCGCATT-3’

b. 5’-TTTGCGATACTCACGCTATT-3’

c. 5’-TTTGCGATACTCTGCGATTT-3’

d. All the answers are correct

e. All the answers are incorrect

Please explain answer.

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Homework Answers

Answer #1

Option E

A hairpin structure is formed due to internal nase paring between nitrogenous bases. It is mainly seen in RNA molcules.

So, now you have to carefully observe which molecules can show internal pairing between bases.

In all the three options, no strand can show internal pairing and therefore no hairpin structure will be formed.

These are also called as secondary structures.

A hairpin structure will look like -

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