MHT CET202613 April 2026Evening ShiftChemistryBiomoleculesActual
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' ?
Options
- A3' - T T G C A T G - 5'
- B3' - C T G C A T C - 5'
- C3' - C T G C A T G - 5'
- D3' - C T G T A T G - 5'
Correct 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'