Question

a segment of dna has been transcribed into rna. the base sequence of the rna segment is aacgcuauu. from which dna sequence has the rna sequence been transcribed?
o uugcgtuuu
o ttgcgttat
o ttgcgataa
o uugcgauaa

Explanation:

In transcription, RNA is synthesized from a DNA template. The base - pairing rules are: A (adenine) in RNA pairs with T (thymine) in DNA, U (uracil) in RNA pairs with A (adenine) in DNA, C (cytosine) in RNA pairs with G (guanine) in DNA, and G (guanine) in RNA pairs with C (cytosine) in DNA.
For the RNA sequence AACGCUAUU:

• A (RNA) pairs with T (DNA)
• A (RNA) pairs with T (DNA)
• C (RNA) pairs with G (DNA)
• G (RNA) pairs with C (DNA)
• C (RNA) pairs with G (DNA)
• U (RNA) pairs with A (DNA)
• A (RNA) pairs with T (DNA)
• U (RNA) pairs with A (DNA)

Answer:

TTGCGT TAT