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Multiple Choice
In the process of transcription, what is the nucleotide sequence of the mRNA strand synthesized from a DNA template strand with the sequence 5'-ATCGTACG-3'?
A
5'-UACGUAGC-3'
B
5'-UAGCAUGC-3'
C
5'-AUCGUACG-3'
D
5'-TAGCTACG-3'
Verified step by step guidance
1
Identify the direction of the DNA template strand. The given sequence is 5'-ATCGTACG-3', which means it is written from the 5' to the 3' end.
Understand that during transcription, the mRNA is synthesized in the 5' to 3' direction, using the DNA template strand, which is read in the 3' to 5' direction.
Determine the complementary base pairing rules for transcription: Adenine (A) pairs with Uracil (U) in RNA, Thymine (T) pairs with Adenine (A), Cytosine (C) pairs with Guanine (G), and Guanine (G) pairs with Cytosine (C).
Apply the base pairing rules to the DNA template strand 3'-CGTACGAT-5' (reverse of the given 5'-ATCGTACG-3') to synthesize the mRNA strand. The complementary mRNA sequence will be 5'-GCATGCAU-3'.
Verify the synthesized mRNA sequence against the provided options to identify the correct answer. The correct mRNA sequence should match one of the given options.