Question

Cientist wants to make a DNA fingerprint, and she has used polymerase

ain reaction (PCR). What should her next step be?
A. Obtain a sample.
B. Use restriction enzymes.
C. Run gel electrophoresis.
D. Make a karyotype.


The answer it’s B

Answer 1

Answer: B

In this phase, fragments of the DNA are separated OR segregated based on their sizes. DNA samples are placed in one end of gel and electricity is passed to drag them through the gel. The fragments of DNA are made up of negative charge, that’s why they move across the positive electrode. If this process will continue for long time , DNA will shift off the end of gel. To move through the gel it requires high voltage. If the voltage becomes very high it will lead to melting of gel or smearing of the DNA bands.

Step-by-step explanation: