9
$\begingroup$

enter image description here

My attempt: First I took the single letter AA codes and made them amino acids. So, the first one is Trp which is 5'-UGG-3'. From this I got the DNA sequence 3'-CCA-5'. However, the correct answer (shown in red) doesn't have this sequence. What did i do wrong?

$\endgroup$
7
$\begingroup$

Your approach to translate the AA sequence, codon by codon, was correct. This was a bit of a trick question because to recognize it, you had to read the sequence backwards.

UGG-CAA-GGT-CAC etc is read directly off of the 3'->5' strand of the circled answer, reading from right to left.

The bottom left is a red herring because it starts with a start codon, ATG, but reading beyond the start codon, the sequence wouldn't match.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.