Question

What is the amino acid sequence for the following DNA strand?

ATG GCT CGA TCA


met - ala - arg - ser


his - tyr - ser - pro


val - ser - lys- gln


tyr - arg - ala - ser

Answer 1

To translate the given DNA sequence "ATG GCT CGA TCA" into an amino acid sequence, we first need to convert the DNA sequence into its corresponding mRNA sequence by replacing thymine (T) with uracil (U):

- DNA: ATG GCT CGA TCA
- mRNA: AUG GCU CGA UCA

Next, we translate the mRNA into an amino acid sequence using the genetic code. Each group of three nucleotide bases (codon) corresponds to one amino acid:

- AUG - Methionine (met)
- GCU - Alanine (ala)
- CGA - Arginine (arg)
- UCA - Serine (ser)

Therefore, the amino acid sequence for the given DNA strand is:

**Met - Ala - Arg - Ser**

So, the correct answer is **met - ala - arg - ser**.