Question
What is the correct sequence of the complementary strand for the given portion of a DNA molecule:- 5' - G A C G T A C -3' ?
MHT CET
Chemistry
Biomolecules
2026
MHT CET 2026 (13 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 3' - T T G C A T G - 5'
- B. 3' - C T G C A T C - 5'
- C. 3' - C T G C A T G - 5'
- D. 3' - C T G T A T G - 5'
Answer
C. 3' - C T G C A T G - 5'
Step-by-step solution
According to the base pairing rules in DNA, Adenine (A) pairs with Thymine (T) and Guanine (G) pairs with Cytosine (C). The two strands of DNA are antiparallel, meaning the 5' end of one strand pairs with the 3' end of the complementary strand. Given sequence: 5' - G A C G T A C - 3' Complementary sequence: 3' - C T G C A T G - 5' Answer: 3' - C T G C A T G - 5'
Related: Chemistry — Biomolecules · All PYQ Banks