AIIMS 2019 Chemistry DNA Structure MCQ Question
Assertion : Complementary base pairing occurs in DNA. Reason : This is because adenine is combined with cytosine with a double bond and guanine is combined with thymin with a triple bond.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The statement about complementary base pairing in DNA is fundamentally correct; guanine (G) indeed hydrogen bonds to cytosine (C) and adenine (A) binds to thymine (T) through specific hydrogen bonds (A-T with 2 H-bonds and G-C with 3 H-bonds). However, since the options provided include "N/A" and do not directly address the truth of the statement, option D is the most appropriate choice as it indicates that the question may not fit the standard true/false format. Options A and B are incorrect because they imply a definitive true or false answer, while the statement itself is accurate but not directly addressed by the options.
Found an issue with this question?
Related Questions
More from Molecular Basis of Inheritance
More from 2019
Which is incorrect for paper chromatograph
Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual volu...
The most suitable reagent for the following conversion is