Question

The chart below matches messenger RNA codons with amino acids. A DNA strand has the sequence of bases, AAT. According to the chart, the corresponding messenger RNA codes for which amino acid?

Answer 1

I believe that it is Asparagine.

Answer 2

"Leu" is the answer.

Step-by-step explanation:

As we know, the RNA molecule is formed from the DNA molecule in a process called transcription. This process ensures that RNA is formed by nitrogenous bases complementary to DNA nitrogenous bases, however DNA thymine is replaced by uracil in RNA. So if the DNA has the adenine, thymine, thymine and cytosine base sequence (ATTC), the RNA will have a complementary base sequence that will be uracil, adenine, adenine and guanine (UAAG).

Based on this, in relation to the above question, if DNA has the AAT base sequence, RNA will have the UUA base sequence. With the RNA base sequence, we can look at the table which amino acid is encoded by this sequence. Thus, we will see that UUA encodes the amino acid leucine (leu).