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(A) Adenine pairs up with thymine but no...

(A) Adenine pairs up with thymine but not with cytosine.
(R) With cytosine, no hydrogen bonds are possible for adenine.

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

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The correct Answer is:
A
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  2. (A) Guanine unites with Cytosine but not with Thymine. (R) Guanine a...

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  5. (A) In double helical structure of DNA, cytosine pairs with guanine wi...

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  6. (A) Uracil occur in RNA. (R) RNA controls the synthesis of proteins.

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  8. (A) DNA is the chemical basis of heredity and may be regarded as the r...

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  9. (A) RNA on hydrolysis gives equal content of guanine, cytocine and als...

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  13. (A) Glycine is essential amino acid. (R) Glycine is optically active...

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