Which of the following statements about DNA is/are correct?
Which of the following statements about the organization of dna is/are correct?
1) DNA is the hereditary material of all living organisms.
2) All segments of DNA code for the synthesis of proteins.
3) Nuclear DNA is double helical with two nucleotide chains that run anti-parallel.
4) DNA is also found in mitochondria.
Select the correct answer using the code given below: