What is DNA?
Understand the Problem
The question is asking for a definition of DNA. DNA, or deoxyribonucleic acid, is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.
Answer
DNA is a molecule that carries genetic instructions for the development, functioning, and reproduction of organisms. It has a double helix structure.
DNA, or deoxyribonucleic acid, is a molecule that carries the genetic instructions for the development, functioning, and reproduction of all known organisms and many viruses. It is a double helix structure comprised of two polynucleotide chains.
Answer for screen readers
DNA, or deoxyribonucleic acid, is a molecule that carries the genetic instructions for the development, functioning, and reproduction of all known organisms and many viruses. It is a double helix structure comprised of two polynucleotide chains.
More Information
DNA's structure was determined by James Watson and Francis Crick in 1953, with significant contributions from Rosalind Franklin and Maurice Wilkins.
Tips
A common mistake is thinking DNA is only in humans, but it's present in all known organisms and many viruses.
Sources
- What is DNA?: MedlinePlus Genetics - medlineplus.gov
- Deoxyribonucleic Acid (DNA) - genome.gov
- The Structure and Function of DNA - Molecular Biology of the Cell - ncbi.nlm.nih.gov
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