Question

1. what mrna codon would be generated from this small dna sequence? tac

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 mRNA, T (thymine) in DNA pairs with A (adenine) in mRNA, and C (cytosine) in DNA pairs with G (guanine) in mRNA.

Step2: Transcribe the DNA sequence TAC

For the DNA sequence TAC:

• 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.

Answer:

AUG