Question

transcribe the following dna strand into a mrna transcript: tattgcgatcg a at aacgctagc b auaa cgcuagc c aua agc guacg

Explanation:

• In transcription, DNA base pairs (A - T, C - G) are transcribed to mRNA. But in mRNA, uracil (U) replaces thymine (T).
• For each DNA base: T (thymine) in DNA pairs with A (adenine) in mRNA; A (adenine) in DNA pairs with U (uracil) in mRNA; C (cytosine) in DNA pairs with G (guanine) in mRNA; G (guanine) in DNA pairs with C (cytosine) in mRNA.
• Given DNA strand: T A T T G C G A T C G
• Transcribing each base:
• T → A
• A → U
• T → A
• T → A
• G → C
• C → G
• G → C
• A → U
• T → A
• C → G
• G → C

Answer:

B. AUAAACGCUAGC