Question:
Characteristic features of the structure of double-stranded DNA.
Characteristic features of the structure of double-stranded DNA.
Show Hint
DNA = Double helix, antiparallel strands, A-T and G-C base pairing.
Updated On: Mar 7, 2025
Hide Solution
Verified By Collegedunia
Solution and Explanation
Key Features of the DNA Double Helix:
- Double Helix Structure: Two strands of nucleotides run in opposite directions (antiparallel).
- Sugar-Phosphate Backbone: Provides structural support and is composed of deoxyribose sugar and phosphate groups.
- Base Pairing: Adenine (A) pairs with Thymine (T), and Guanine (G) pairs with Cytosine (C) via hydrogen bonds.
- Helical Structure: The two strands coil around an axis with a right-handed twist.
- Uniform Diameter: The structure has a constant diameter of 2 nm due to base-pair complementarity.
Diagram:
Was this answer helpful?
0
0
Top Questions on Genetics
- In the F1 generation (RrIi), if recessive genes are crossed, how many zygotes will form?
- If a sequence has the initiator codon AUG, which codes for methionine, then:
Statement I: Yes, the translation process starts with methionine (AUG is the universal start codon)
Statement II: Methionine may or may not be present in the final protein, as it can be cleaved during post-translational modifications. - Which one is termed as the "guardian of the genome"?
- Where is Satellite DNA located?
- Mule is the result of:
- KCET - 2024
- Biology
- Genetics
View More Questions
Questions Asked in UP Board XII exam
- Define ecosystem. Describe its biotic and abiotic components with diagrams.
- Describe different Assisted Reproductive Technologies.
- UP Board XII - 2024
- Reproductive Biology
- What is mutualism? Explain it with a suitable example.
- Describe the role of microbes in biogas production.
- Draw a labelled diagram of a sectional view of the female ovary.
- UP Board XII - 2024
- Reproductive Biology
View More Questions