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Question

Which of the following is correct pair of pyrimidine bases?


A
Adenine & Thymine
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B
Adenine & Guanine
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C
Thymine & Cytosine
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D
Guanine & Cytosine
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Solution

The correct option is D Guanine & Cytosine
DNA molecule id made up of two type of nitrogen bases purine and pyrimidine. Cytosine and Thymine (C, T) are examples of a pyrimidine which is composed of a single six atom ring and adenine and guanine (A,G) are the examples of purine. A base pair is one of the pairs A-T or C-G. The A-T pair forms two hydrogen bonds. The C-G pair is formed by three hydrogen bonding between complementary bases holds the two strands of DNA together
So, the correct answer is 'Thymine and Cytosine'.

Biology

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