Question

A scientist wants to begin making a DNA fingerprint, but she has only a very small DNA sample. What should her next that be?

A. Do polymerase chain reactions (PCR) B. Use restriction enzymes C. Make a karyotype D. Run gel electrophoresis

Answer 1

its a polymerase chain reactions

Answer 2

• When the scientist want to make a DNA fingerprint but she has a very small DNA the next step she needs to perform is polymerase chain reaction (PCR).
• The polymerase chain reaction is a technique which is used to make several copies of any desired DNA segment.
• A single polymerase chain reaction cycle consists of many steps and this PCR cycle can be repeated many times to amplify the DNA sample and get several numbers of copies which can be up to millions.