Question

What will be the corresponding mRNA sequence based on the given DNA template strand?

• A. 5'-AUGCGA-3'
• B. 3'-TACGCT-5'
• C. 5'-ATGCGT-3'
• D. 3'-ATGCGT-5'

Hint:

Remember, during transcription, adenine (A) pairs with uracil (U) in RNA (instead of thymine), and cytosine (C) pairs with guanine (G), and vice versa.

Answer 1

The Correct Option is A

Transcription is the process by which mRNA is synthesized from a DNA template strand. During transcription, RNA is synthesized in the 5' to 3' direction, with the sequence of the RNA being complementary to the DNA template strand. Since uracil (U) replaces thymine (T) in RNA, the corresponding mRNA sequence is complementary to the given DNA template sequence, replacing T with U. For example, if the given DNA template strand is 3'-TACGCT-5', the corresponding mRNA sequence will be 5'-AUGCGA-3', as uracil (U) replaces thymine (T) in RNA. Thus, the correct answer is 5'-AUGCGA-3'.