Home › NEET UG › Biology › Molecular Basis of Inheritance › In a polynucleotide chain, two nucleotides are j…
In a polynucleotide chain, two nucleotides are joined by which linkage, and at which carbon atoms of the sugar?
A{'text': "2'-5' phosphodiester linkage", 'label': 'A'}
B{'text': "1'-3' glycosidic linkage", 'label': 'B'}
C{'text': "5'-5' phosphoanhydride linkage", 'label': 'C'}
D{'text': "3'-5' phosphodiester linkage", 'label': 'D'}
Answer & Solution
Correct answer: D. {'text': "3'-5' phosphodiester linkage", 'label': 'D'}
Adjacent nucleotides are linked by a 3'-5' phosphodiester bond, joining the 3'-OH of one sugar to the 5'-phosphate of the next. The chain therefore has distinct 5' and 3' ends.
Related questions
In eukaryotes, primary mRNA transcript becomes mature mRNA afterThe 'one gene - one polypeptide' concept was proposed byIn prokaryotes, the small ribosomal subunit recognises the mRNA initiation site via theIn humans, the percentage of A in a DNA sample is 30 %. By Chargaff's rule, the percentageTranscription differs from replication in that itThe genetic code is described as degenerate becauseOkazaki fragments are formed on theDuring DNA replication, the enzyme that unwinds the double helix is