7. DNA and Chromosome Structure

Which components form the backbone of a DNA molecule?

In double-stranded DNA, which base-pairing rule correctly describes Watson–Crick base pairing?

In the context of DNA structure, who is most commonly credited with proposing the double-helix model of DNA in 1953?

In the diagram below, the two blue strands represent _____.

Which pair of nitrogen bases are correctly matched in the structure of DNA?

In DNA, which nitrogenous base pairs with adenine?

DNA is made of two chains of nucleotides. Which type of bonds hold the two chains together?

In the DNA double helix, what holds the two antiparallel strands together?

Which of the following is the only difference between the nitrogenous bases found in DNA and those found in RNA?

Which of the following is a feature shared by both DNA and RNA?

In terms of overall electrical charge at physiological pH, what net charge does DNA typically carry and what structural feature is primarily responsible?

In the DNA double helix, which two molecules form the repeating sugar-phosphate backbone of each strand?

Which of the following DNA molecules is expected to be the most thermodynamically stable under physiological salt conditions, assuming all are the same length and fully paired (no mismatches)?

DNA consists of two antiparallel strands of nucleotides held together by which type of bonds?

The two strands of a DNA molecule are held together by hydrogen bonds between the: