Answer:
C) Leucine.
Explanation:
The transcript of AAT is UUA, which is the code for leucine. Using the chart, first find the U on the left, for the first position. Then, go to the first column to find the U for the second position. This means it has to be either phenylalanine or leucine. To determine, use the last letter, A, on the right hand side of the chart. Since this is found in the bottom half of the U-U box, it must correspond to leucine.
(copied from USATESTPREP)
