- DNA is the primary genetic material, but not universal (some viruses use RNA). - Not all DNA sequences are protein-coding. - Nuclear DNA is a double helix with anti-parallel strands. - Extranuclear DNA exists in organelles like mitochondria and chloroplasts.
Which of the following statements about DNA is/are correct ? 1. DNA is the hereditary material of all living organisms. 2. All segments of DNA code for synthesis of proteins. 3. Nuclear DNA is double helical with two nucleotide chains which run anti-parallel. 4. DNA is also found in mitochondria. Select the correct answer using the code given below :
Asked in UPSC NDA 1 2016 · Topic: Cell (Nucleus: Nuclear Envelope, Chromatin, Nucleolus, and Functions)
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