Question

a trna with its anticodon is shown at right. the anticodon is written 3 to 5. which amino acid is attached to this trna? second letter first letter third letter

Explanation:

Step1: Recall base - pairing rules

The anticodon on tRNA pairs with the codon on mRNA. The base - pairing rules are A - U and G - C.

Step2: Determine the mRNA codon

The tRNA anticodon is CGA (written 3' to 5'). The corresponding mRNA codon (5' to 3') is GCU.

Step3: Use the genetic code table

Looking at the genetic code table, for the mRNA codon GCU, the first letter is G, the second is C, and the third is U. According to the table, GCU codes for Alanine (Ala).

Answer:

Ala