Forensic Science - DNA Fingerprinting Review

In gel electrophoresis, the largest DNA fragment will appear

• closest to the starting wells
• farthest from the starting wells
• three quarters away from the starting wells
• it depends on how many fragments there are

Tags

NGSS.MS-PS2-5

Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?

• DNA is negatively charged so attracted to the positive end of the unit
• DNA is positively charged to attracted to the negative end of the unit
• the agarose gel in negatively charged
• the agarose gel is positively charged

What is the purpose of gel electrophoresis?

• helps cut DNA
• count the genes in DNA
• separates DNA based on size
• allows for an exact replicated organism

DNA fingerprinting works because

• Most genes are dominant
• All organisms contain RNA
• The most important genes are different among most people
• No two people, except identical twins, have exactly the same DNA 

Tags

NGSS.HS-LS3-2

Which suspect is likely guilty?

• Suspect #1

• Suspect #2

• Suspect #3

Based on these results whose blood was found in the blood stain at the crime scene?

• Bob

• Sue

• John

• Lisa

The total amount DNA in a cell is called the ?

• DNA Fingerprint

• Introns

• Genome

• Restriction Enzyme

In the nucleus of most human body cells, there are

• 23 pairs of chromosomes

• 46 pairs of chromosomes

• 92 chromosomes

• None of these choices

Tags

NGSS.HS-LS3-1

How many base pairs (A & T, C & G) does a human genome DNA molecule have?

• 3 million base pairs

• 3 billion base pairs

• 3 thousand base pairs

• one base pair

Biological evidence is used in forensics for DNA identification purposes. Biological evidence includes ...

• blood

• saliva

• urine

• all of these