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DNA

Guanine pairs...

Question

Guanine pairs with______.

A

Adenine

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B

Cytosine

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C

Thymine

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D

none of these

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Solution

The correct option is B
Cytosine

The pairs are

Adenine:: Thymine
Guanine:: Cytosine

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Similar questions

Q. Adenine, Guanine, Thymine and Cytosine are the components of .

Q. Assertion ( A): Thymine pairs with adenine
whereas cytosine pairs with Guanine in DNA
molecule .
Reason ( R ):The hydrogen bonding between
bases of two strands is Highly specific .

Statement 1: The four nitrogen bases in a DNA molecule are guanine, thymine adenine, cytosine.

Statement 2: Where adenine and thymine are purines and guanine and cytosine are pyrimidines.

STATEMENT-1 : Guanine unites with cytosine with three hydrogen bonds but it forms only one hydrogen bond with thymine.
STATEMENT-2 : Guanine and cytosine are purines while that of thymine is a pyrimidine.

Q. Two stretches of DNA, A and B are taken for a polymerase chain reaction. If DNA-A has more guanine-cytosine bases than adenine-thymine and DNA-B has more adenine-thymine bases than guanine-cytosine bases, which of the following statements is true regarding PCR of these two stretches of DNA?

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