Question

If the sequence of bases in sense strand of DNA is $5^{{}^{\prime }}-GTTCATCG-3^{{}^{\prime }}$, then the sequence of bases in its RNA transcript would be

• A. $5^{{}^{\prime }}-GTTCATCG-3^{{}^{\prime }}$
• B. $5^{{}^{\prime }}-GUUCAUCG-3^{{}^{\prime }}$
• C. $5^{{}^{\prime }}-CAAGTAGC-3^{{}^{\prime }}$
• D. $5^{{}^{\prime }}-CAAGUAGC-3^{{}^{\prime }}$

Answer 1

The correct option is D $5^{{}^{\prime }}-CAAGUAGC-3^{{}^{\prime }}$

As per the complementary base pairing rule, A pairs with T and G pairs with C. So, if DNA sense strands have a base sequence of GTTCATCG so the sequence of bases in RNA transcript would be CAAGUAGC as it is used to read the expected protein code. Thus, the correct answer is option D.