Questions: 1. What 3 codons act as signals to stop protein synthesis?

2. What codon initiates (begins) protein synthesis)?

3. List ALL of the codons for leucine.

4. Why do you think some amino acids have more than one codon? What does this tell you about the frequency or importance of that acid?

Name ALL the codons for these amino acids:
4. Phenylalanine –

5. Serine (Ser) –

6. Isoleucine (Ile) –

7. Valine (Val) –

9. Glycine (Gly) –

10. Alanine (Ala)–

11. Threonine (Thr)-

12. If the DNA sequence is --- AAA TAT CCG TAG CAA ATG CGC, write the mRNA sequence, tRNA anticodon sequence, and the six amino acids for this.

DNA: AAA TAT CCG TAG CAA ATG CGC

mRNA:

tRNA:

Amino acids:

*REMEMBER to use the mRNA strand to determine the Amino Acid*