Which bond is present between the nucleotides of DNA:
Correct answer: B. Phosphodiester bond
- A. Peptide bond
- B. Phosphodiester bond
- C. Glycosidic bond
- D. Ester bond
Explanation
When nucleotides are incorporated into DNA, adjacent nucleotides are linked by a phosphodiester bond: a covalent bond is formed between the 5' phosphate group of one nucleotide and the 3'-OH group of another. In this manner, each strand of DNA has a "backbone" of phosphate-sugar-phosphate-sugar-phosphate.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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