Forensic Science - DNA Exam – Chap 7

In 1953, James Watson and (a)   discovered the configuration of the DNA molecule.

• Ray White

• Francis Crick

• Alec Jeffreys

• Kary Mullins

You are examining a DNA sample and want to separate DNA fragments into visible bands. Which technique should you use?

• PCR

• RFLP

• STR

• Electrophoresis

Which of the following has no nuclei and therefore no nuclear DNA?

• White blood cells

• Red blood cells

• Bones

• Saliva

Who is credited with developing DNA profiling using RFLP?

• James Watson

• Sir Alec Jeffreys

• Maurice Wilkins

• Colin Pitchfork

What are the enzymes that are used to cut DNA into smaller fragments?

• Cutting enzymes

• Restriction enzymes

• Wear enzymes

• None of the above

The national database that contains nearly 16 million entries as of December 2016 that is used to identify unknown suspects is known as the (a)   .

• Combined DNA Index System

• Complex DNA Identification System

• Combined DNA Identification System

What are locations (loci) on the chromosome that repeat a specific sequence of two to ten base pairs?

• Polymerase chain reaction (PCR)

• Restriction fragments lengths polymorphism (RFLP)

• Short tandem repeats (STR)

• Electrophoresis

You want to make multiple copies of a sample of DNA for further testing. Which method would you choose?

• Polymerase chain reaction (PCR)

• Restriction fragments lengths polymorphism (RFLP)

• Short tandem repeats (STR)

• Electrophoresis

In the process of electrophoresis, the​ (a)   fragments are closest to the injection wells?

• medium
• larger
• There is no size difference

• smaller

You are given a sample of hair without a root. One thing you can be certain about any DNA you extract is:

• The DNA is mitochondrial and will be inherited from the mother

• The DNA is mitochondrial and will be inherited from father

• The DNA is mitochondrial and will be inherited from both parents

• There will be no DNA in the hair without the root