In a hair pin modle of RNA which nitrogen base is present at the short end

Options

A. Adenine
B. Guanine
C. Thymine
D. Cytosine

Answer

B

Explanation

Stem – loop intramolecular base pairing is a pattern that occurs in single stranded RNA. It occurs when two regions of same strand usually complementary in nucleotide sequence when read in opposite direction called hair pin loop structure. In this they have more guanine residues as pairing between guanine and cytosine is more stable then thymine and cytosine.