Question

Complementary base for adenine is cytosine

Answer 1

False. Complementary base pair for Adenine (A) is Thymine (T).

• Guanine (G) is the complementary base pair of Cytosine (C).

• Double hydrogen bond is present between Adenine and Thymine (A = T).

• Triple hydrogen bond is present between Cytosine and Guanine (C ≡ G).

Answer 2

Answer:

either of the nucleotide bases linked by a hydrogen bond on opposite strands of DNA or double-stranded RNA: guanine is the complementary base of cytosine, and adenine is the complementary base of thymine in DNA and of uracil in RNA.

Explanation:

Adenine is oxidatively deaminated to hypoxanthine, cytosine to uracil, and guanine to xanthine. Hypoxanthine pairs with cytosine rather than with thymine (Figure 27.43). Uracil pairs with adenine rather than with guanine. Xanthine, like guanine, pairs with cytosine.