Question

Choose the correct answers from the alternatives given :
If a DNA strand has a nitrogenous base sequence T, A, C, G, A, the sequence of bases on the corresponding mRNA would be:

• A. C,T, G,A,T
• B. G, U, A, C, U
• C. A, T, G, C,T
• D. A, U, G, C, U

Answer 1

The correct option is D A, U, G, C, U

In DNA, the purines adenine and guanine bond with the pyrimidine thymine and cytosine respectively while in RNA, adenine binds with uracil. During transcription, the RNA so formed, has genetic code complementary to the DNA. So, if a DNA strand has a nitrogenous base sequence T, A, C, G, A the sequence of bases on the corresponding mRNA strand would be complementary as, A, U, G, C, U.

So, the correct option is 'A, U, G, C, U'.