Q: 32 (NDA-I/2016)

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:

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