Use the mRNA codonchart to translate this DNA message:

DNA	     TAC	     TGC	     CAC	    ATT
mRNA
amino acid

1. List the sequence of amino acids in this chain
2. Suppose the sixth base in the DNA chain was an A instead of aC. How would this affect the protein

           produced?

1. What is the name given to this type of mutation in a proteinchain? Explain

Which of the following bird speciesare most closely related?

      A. Picoides borealis and Phylloscopusborealis

       B. Numeniusborealis and Picoides borealis sapiens

      C. Numenius americanusand Grus Americana

      D. Picoidesvillosus and Picoides borealis

The similarity of the embryos ofchickens and humans is evidence of ________.

      A. biochemical similarities

      B. developmental similarities

      C. morphological similarities

      D. biogeography

If the coat of avirus about to attack a bacterium is labeled with radioactivesulfur and the DNA is labeled with

                radioactivephosphorous, over time

1. both the sulfur and the phosphorous will be found within thebacterium
2. only the sulfur will be found inside the bacterium
3. only the phosphorous will be found inside the bacterium
4. both the sulfur and the phosphorous will be found outside thebacterium

The joining of amino acid 2 to amino acid 3 (letter \"D\") will beby

a.	an ionic bond.
b.	protein linkage.
c.	a peptide bond.
d.	hydrogen linkage.
e.	a hook.