Q. The structure of DNA like a spiral ladder because (Solved)
1. Purine and Pyrimidine are on the opposite side
2. Purine and Pyrimidine linked with hydrogen bond
3. All nucleotides join through a phosphodiester bond
4. Two polynucleotide chains arranged parallel to each other and are spirally Twisted
- d. Two polynucleotide chains arranged parallel to each other and are spirally Twisted