Question

Adenine always pair with thymine and cytosine always pair with guanine. (true or false) please give me certainly right answer​

Answer 1

Answer:

true

Explanation:

Adenine is always paired with thymine, and guanine is always paired with cytosine. These are known as base pairs. Adenine forms two hydrogen bonds with thymine in DNA and two hydrogen bonds with uracil in RNA, while three hydrogen bonds are formed between guanine and cytosine.

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Answer 2

Answer:

Two purines will not fit between the strands while two pyrimidines will be too far to bond. Therefore a purine has to make a hydrogen bond with another pyrimidine. ... Hence adenine makes hydrogen bonds with thymine and guanine makes hydrogen bonds with cytosine.