DNA Profiling

What can be determined about the DNA in bands I and II?

• Band I contains a longer DNA sequence than band II.

• The DNA bands have the same DNA sequence

• The DNA bands are the same size

• Band II contains a longer DNA sequence than band I.

sequence of repeating bases in the non-coding regions of DNA that are used in DNA profiling

• STR (Short Tandem Repeat)

• PCR (Polymerase Chain Reaction)

• VNTR (Variable number of Tandem Repeats)

According to the dna evidence, which suspect left DNA at the crime scene?

• suspect 1

• suspect 2

• suspect 3

• none of the suspects

DNA profiling uses what part of DNA

• coding region

• non-coding

Dr. Alec Jeffreys used white blood cells to produce first

• cloned animal

• DNA profile

• DNA blood study

• DNA prognosis

Why are restriction enzymes used when making a DNA fingerprint using STRs?

• They are used to determine the size and shape of DNA fragments.

• They are used in order to allow us to determine if a specific family or family member is related to the crime based on their DNA fragments.

• STR bands are units of bases that are typically two to five bases long and repeat multiple times. Restriction enzymes cut these bands since they match the enzyme, making them easily recognisable.

Which suspect is linked to the crime scene by this DNA analysis

• Suspect A

• Suspect C

• Suspect D

• Suspect B

Tags

NGSS.HS-LS3-1

Which of the following is a method for comparing DNA after extraction, and adding restriction enzyme?

• Gel electrophoresis

• Mass spectrometry

• Chromatography

• Spectrophotometry

What description relates to Jeffrey's major contribution to forensics?

Tags

NGSS.HS-LS3-1

Amplifying fragments of DNA is called

• restriction enzymes.

• polymerase chain reaction (PCR).

• electrophoresis.

• short tandem repeat (STR).