Question

In DNA the linkages between different nitrogenous bases
are: [NEET Kar. 2013]
(a) peptide linkage (b) phosphate linkage
(c) H-bonding (d) glycosidic linkage

Answer 1

Answer:

option c is correct : H-bonding

Explanation:

because adenine is linked with guanine by H bond of bond order 2 and cytosine is linked with thyamine by H bond with bond order 3

Answer 2

In DNA the linkages between different nitrogenous bases are glycosidic linkage

Step by step explanation:

• DNA has has the nitrogenous base, phosphate, and sugar.
• Purines and pyrimidines are the nitrogenous  bases.
• The purines are the Guanine and  Adenine have double ring
• The pyrimidines are Cytosine and Thymine have single ring.
• A glycosidic bond is a covalent bond that joins a carbohydrate to another functional group or molecule.
• DNA contains four glycosydic bonds, each with one of the four DNA bases.

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