Chapter 13

1. an enzyme that separates two strands in order to form templates
5. an enzyme that joins rna nucleotides in order to make a primer
7. a single stranded end of a double stranded restriction fragment
9. an enzyme that cuts dna or rna
10. the less condensed form of eukaryotic chromatin
11. the manipulation of genes for specific purposes
13. a specific dna sequence that is recognized and cut by a restriction enzyme
14. a virus that infects bacteria
15. an infectious particle incapable of replicating outside of a cell

2. the arrangement of sugar-phosphate backbones
3. the specific form made up of two polynucleotide strands
4. a protein which connects its positive charged amino acids with negative charged dna
6. the cellular process that uses specific enzymes to remove and replace incorrectly paired nucleotides
8. an area where chromosomes exist in prokaryotic cells
12. a duplication of dna segments