Question

Often only small amounts of DNA are found at a crime scene. Which technique uses an enzyme to replicate DNA regions from a small sample of DNA for use in DNA fingerprinting?

Answer 1

you will also used in PCR (polymarisechain reaction )  process whice are used in four step 
1. Denaturation 
2. Annealing
3. extraction 
4. holding temp.
here are also used in taq polymerase.

Answer 2

DNA polymerase reaction is used to replicate DNA. It is accompanied by multiple steps which includes many enzymes perform the replication of DNA.  

DNA polymerase chain reaction also includes primers to highlight the specific or desired regions on the strands of DNA.

These are the 3 basic steps of polymerase reaction:

- Denaturation  

- Annealing  

- Extension