Question

Use the double-stranded DNA molecule below to answer the following questions. The first pair of nucleotides (bolded) contains the start point of transcription.
5'-ATGTCAGGTACGCCACAT-3'

3'-TACAGTCCATGCGGTGTA-5

Which of the following is the correct mRNA produced from the transcription of this DNA molecule?

1. 3'-UACAGUCCAUGAGGUGUA-5'
2. 5'-AUGUCAGGUACGCCACAU-3'
3. 3'-UACAGUCCAUGCGGUACA-5'
4. 5'-AUGUGGAGUACCUGACAU-3'

Answer 1

Answer:

5'-AUGUCAGGUACGCCACAU-3'

Explanation:

The correct answer is B. because DNA is read in 3′ to 5′ while the mRNA produced in 5′ to 3′.