Question

In DNA the complementary bases are________.

Answer 1

DNA:

1. DNA is known as deoxyribonucleic acid.
2. It is made up polymer of nucleotides.
3. Nucleotides comprise pf nitrogen bases, a sugar molecule, and a phosphate group.
4. They make up the helix.
5. They are known to store the genetic information of an organism.
6. The sugar-phosphate makes the backbone of DNA.
7. The Covalent bonds between the sugar of one nucleotide and the phosphate group of the next bind to form a chain of nucleotides.
8. The nucleotide chain exists in an alternating sugar-phosphate backbone.
9. The monosaccharide used in the DNA helix is a deoxyribose sugar.
10. The nitrogenous bases pair with each other using hydrogen bonds.
11. There are two types of bases known as purines and pyrimidines.
12. The purine bases are adenine and guanine.
13. Whereas the pyrimidine bases are cytosine, uracil, and thymidine.
14. Adenine and thymine are complementary to each other and pair via two hydrogen bonds.
15. Whereas, guanine and cytosine are complementary to each other and pair via three hydrogen bonds.
16. The chain of nucleotides forms a double-stranded DNA.
17. Both the chains run in the opposite direction in an antiparallel fashion.
18. At the 5' end a phosphate group is present and at the 3' end, a hydroxyl group is present.

Final answer: In DNA the complementary bases are adenine and thymine, guanine, and cytosine.