Question

If the DNA sequence is TAC TTG ACC, what would be the resulting amino acid sequence after transcription and translatior

Hint: Think of the first step of protein synthesis? Do this first and then find the amino acid sesquence.)

A) lsol - Lys - STOP

B) Gly - Ala - Val

C) Met - Asn - Trp

D) Tyr - Leu - Thre

Answer 1

Answer: Option C) Met - Asn - Trp

Step-by-step explanation:

Recall that thymine T binds specifically to Adenine A, while Cytosine C binds to Guanine G, and also uracil instead of thymine exists in the mRNA molecule.

So, the DNA sequence of TAC TTG ACC is transcribed as a messenger RNA (mRNA) molecule with AUG AAC UGG.

Then, the mRNA directs the translation of Met - Asn - Trp since the genetic code permits that

- AUG specify the amino acid Methionine

- AAC specify the amino acid Asparagine

- UGG specify the amino acid Tryptothan

Thus, the protein synthesized is a tripeptide with Methionine - Asparagine - Tryptothan.