Thymine is which of the following in DNA?

Thymine is which of the following in DNA?

• A. Ribose sugar
• B. Nitrogen-containing base found in DNA
• C. Purine base
• D. Hydrogen bond donor

Answer: (B)

Thymine is a nitrogen-containing base found in DNA. It belongs to the pyrimidine class, one of the four bases that encode genetic information in DNA, and it attaches to the deoxyribose sugar in the DNA backbone. It is not a sugar itself (that would be ribose or deoxyribose), and it is not a purine (those are adenine and guanine). In the DNA double helix, thymine pairs with adenine through two hydrogen bonds, helping to stabilize the structure. This combination of being a DNA base, specifically a pyrimidine, is what makes the correct description.

Thymine is a nitrogen-containing base found in DNA. It belongs to the pyrimidine class, one of the four bases that encode genetic information in DNA, and it attaches to the deoxyribose sugar in the DNA backbone. It is not a sugar itself (that would be ribose or deoxyribose), and it is not a purine (those are adenine and guanine). In the DNA double helix, thymine pairs with adenine through two hydrogen bonds, helping to stabilize the structure. This combination of being a DNA base, specifically a pyrimidine, is what makes the correct description.