1. A frameshift mutation could result from E) either an insertion or a deletion of

a base.

2. Which of the following does not occur in prokaryotic

eukaryotic gene expression, but does in eukaryotic

gene expression?

3. Which of the following helps to hold the DNA strands

apart while they are being replicated?

4. Accuracy in the translation of mRNA into the primary

structure of a polypeptide depends on specificity in

the

5. Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what

percentage of the nucleotides in this sample will be

thymine?

C) A poly-A tail is

added to the 3' end

of an mRNA and a

cap is added to the

5' end.

single-strand binding proteins

bonding of the

anticodon to the

codon and the attachment of amino

acids to tRNAs

8%

6. What is the function of DNA polymerase III? to add nucleotides

to the 3' end of

a growing DNA

strand

7. A new DNA strand elongates only in the 5' to 3' direction because

DNA polymerase

can only add nucleotides to the

free 3' end.

8. How do we describe transformation in bacteria? assimilation of external DNA into a

cell