Amino acid question!!! for anatomy/chem class?

Question

WHat is the answer to this question and why?

Calculate the number of amino acids that a DNA sequence of twenty seven nucleotides enocdes.

Answer 1

The "word" length for DNA is 3 nucleotides.  That is each of the twenty amino acids is specified by a unique 3 character DNA sequence called a codon.  So, the number of amino acids specified here is 27/3=9.

Answer 2

DNA has 27 nucleotides.

(translates to)

RNA has 27 nucleotides

(transcribes to amino acids)

3 RNA nucleotides per amino acid (AUG= methionine, which is almost always your first amino acid)

So 27/3 = 9 amino acids

Good luck!