DNA Complementary Strand Writing — NEET Biology
📚 Practice ConceptIf the sequence of one strand of DNA is written as follows: 5'-ATGCATGCATGCATGCATGCATGC-3' Write down the sequence of complementary strand in 5'-3' direction.
Assertion (A): The sequence of one DNA strand can be predicted if the other strand’s sequence is known. Reason (R): Base pairing confers complementarity between the two polynucleotide chains.
View solution & NCERT explanation
Correct answer: A — If both assertion and reason are true and the reason is the correct explanation of the assertion.
NCERT states “if the sequence of bases in one strand is known then the sequence in other strand can be predicted” making the Assertion true. NCERT explains “The base pairing confers a very unique property to the polynucleotide chains. They are said to be complementary to each other” - the Reason explains WHY prediction is possible through complementary base pairing.
What does NCERT say about If sequence one strand?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.