The covalent bonds and hydrogen bonds in the structure of DNA are because covalent bond holds together sugar and bases. The hydrogen bond holds together the two nucleotides. They provide stability in structure of DNA
Further Explanation:
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, and thymine. The DNA consist two kind of chemical bones in their structure:
The nucleotides present in DNA are linked with the corresponding base through hydrogen bonds only. The stability of DNA is due to the presence of covalent bond because these are the strongest bond. Covalent bonds connect the sugar, phosphate group and bases.
The hydrogen bonds mainly present in water, DNA and protein
The cytosine pairs with guanine with three hydrogen bonds. On the other hand the thymine pairs with adenine with two hydrogen bonds.
Learn more:
Answer Details:
Grade: High School
Subject: Molecular Biology
Chapter: Gene expression
Keywords:
DNA, RNA, guanine, adenine, cytosine, gene, chromosome, genetic information, nucleosome, thymine, nucleotide, hydrogen bond, covalent bond.
