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In DNA, the complementory bases are...

In DNA, the complementory bases are

A

adenine and thymine, guanine and cytosine

B

uracil and adenine, cytosine and guanine

C

adenine and guanine, thymine and cytosine

D

adenine and thymine, guanine and uracil

Text Solution

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The correct Answer is:
A
DNA has a double helical structure. These helix contains polynucleotides chain and these chains are held together by hydrogen bonds . In these polynucleotide chain of DNA , adenine has thymine opposite to it and guanine has cytosine opposite to it.
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