Question

the sequence of the mrna that would result from transcribing a segment of a dna template strand with the bases aatagcgta would be
multiple choice
uacgcuaau.
auuagcgua.
atgcgatta.
uuaucgcau.
augcgauua.

Explanation:

Step1: Recall base - pairing rules

In transcription, DNA bases pair with RNA bases. The rules are: \(A\) (adenine in DNA) pairs with \(U\) (uracil in RNA), \(T\) (thymine in DNA) pairs with \(A\) (adenine in RNA), \(G\) (guanine in DNA) pairs with \(C\) (cytosine in RNA), and \(C\) (cytosine in DNA) pairs with \(G\) (guanine in RNA).

Step2: Transcribe each base

Given the DNA template strand \(AATAGCGTA\):

• \(A\) (first base) pairs with \(U\)
• \(A\) (second base) pairs with \(U\)
• \(T\) pairs with \(A\)
• \(A\) pairs with \(U\)
• \(G\) pairs with \(C\)
• \(C\) pairs with \(G\)
• \(G\) pairs with \(C\)
• \(T\) pairs with \(A\)
• \(A\) pairs with \(U\)

So the mRNA sequence is \(UUAUCGCAU\)

Answer:

UUAUCGCAU.