6 public questions tagged with this topic.
The two strands of DNA run in opposite directions (antiparallel) with one strand in the 5' to 3' direction and the other in the 3' to 5' direction.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Regulation of Gene Expression - Lac Operon
DNA consists of two antiparallel strands forming a double helix, with complementary base pairing (A-T, G-C).
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
DNA is composed of nucleotides linked by phosphodiester bonds, forming a double-stranded helical structure.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
Stacking interactions is the scientifically accurate answer to this question. Within the study of Nucleic Acid, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of Stacking interactions directly address what is being asked. Among the other options, Hydrogen bonding, Ionic interactions, and Covalent bonding do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.
Ref: Campbell Biology, Urry et al., 12th Ed.
Stacking interactions accurately defines or describes the concept asked in this question. Within DNA, precise definitions and terminology are essential for clear scientific communication. The other options (Hydrogen bonds, Covalent bonds, and Ionic interactions) either describe related but distinct concepts, use incorrect terminology, or confuse similar-sounding terms that have different scientific meanings. A thorough understanding of exact definitions helps distinguish between closely related biological concepts and is crucial for competitive examinations.
Ref: Molecular Biology of the Gene, Watson et al., 7th Ed.
Watson & Crick accurately describes the structural composition or molecular organization asked about in this question. In DNA, knowledge of molecular structure is directly linked to understanding biological function. The specific arrangement of chemical components in Watson & Crick determines its physical properties, biological activity, and interactions with other molecules. The other options (Rosalind Franklin, Chargaff, and Friedrich Miescher) describe different structural arrangements, incorrect stoichiometry, or compositions of different biological molecules.
Ref: Molecular Biology of the Gene, Watson et al., 7th Ed.
