MDCAT Biology MCQ #677

During DNA replication, a mutation occurs when a new nucleotide is incorrectly linked to the sugar-phosphate backbone. Which bond is being formed?

MDCAT Biology MCQ #677

  1. Question 1

    Q1. During DNA replication, a mutation occurs when a new nucleotide is incorrectly linked to the sugar-phosphate backbone. Which bond is being formed?

    • A) Hydrogen bond
    • B) Phosphodiester bond
    • C) Peptide bond
    • D) Glycosidic bond

    Answer: Phosphodiester bond

    Explanation: Nucleotides in a DNA strand are linked by phosphodiester bonds; hydrogen bonds are tempting but they connect the two strands together.