Hydrogen bonding is strongest between cytosine and guanine (d).
Further Explanation:
The bond between the electronegative and hydrogen atom are mainly called hydrogen bond. The electronegative atom can be fluorine, nitrogen and oxygen. These bonds are more stronger than dipole interaction and Vander wall forces but on the other hand they are week from covalent bonding or ionic bonding.
The hydrogen bonds mainly present in water, DNA and protein. DNA is mainly made up of the nucleotides and also contains genetic information in the genes. Every nucleotide is made up of deoxyribose, nitrogenous base, and phosphate group. DNA is composed of four distinct type of nitrogenous base:
- Cytosine
- Adenine
- Guanine
- Thymine
In DNA helix, the bases: cytosine, adenine, guanine and thymine are linked with the corresponding base through hydrogen bonding. The cytosine pairs with guanine with three hydrogen bonds. On the other hand the thymine pairs with adenine with two hydrogen bonds. Thus, the bonding between guanine and cytosine are stronger because of the higher number of hydrogen bond which provides more strength.
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Answer Details:
Grade: High School
Subject: Molecular Biology
Chapter: Gene expression
Keywords:
DNA, RNA, guanine, adenine, cytosine, gene, chromosome, genetic information, nucleosome, thymine, nucleotide.
