Chemistry · Biomolecules
JEE Main 2024 — 1 February, Shift 1 — Question 57
If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in complementary strand is:
- Option A:
CATTAGCT
- Option B:Correct
TACGAAGT
- Option C:
GTACTTAC
- Option D:
ATGCGACT
Answer: B
Step-by-step solution
Adenine base pairs with thymine with 2 hydrogen bonds and cytosine base pairs with guanine with 3 hydrogen bonds.

Answer key and solution verified before publishing.
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- Exam
- JEE Main 2024
- Paper
- 1 February, Shift 1
- Subject
- Chemistry
- Chapter
- Biomolecules
- Topic
- Nucleic Acids and Other Biomolecules