If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in complementary strand is:
- CATTAGCT
- TACGAAGT
- GTACTTAC
- ATGCGACT
The Correct Option is B
Solution and Explanation
DNA base pairing rules state that adenine (A) pairs with thymine (T) via 2 hydrogen bonds, and cytosine (C) pairs with guanine (G) via 3 hydrogen bonds. Therefore, for the given sequence ATGCTTCA, the complementary sequence is determined as follows:
Original Strand: A T G C T T C A
Complementary Strand: T A C G A A G T
This follows from the complementary base pairing rules.
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