Gel Electrophoresis

In a forensic analysis, the technique used to separate DNA fragments for comparison is known as

• Cloning

• gel electrophoresis

• chromatography

• use of a dichotomous key

Answer explanation

Gel electrophoresis is the technique used to separate DNA fragments for comparison in forensic analysis.

This technique used to analyze DNA involves the

• synthesis of new DNA strands from subunits

• separation of DNA fragments based on size

• production of genetically engineered DNA molecules

• removal of defective genes from DNA

Answer explanation

The technique used to analyze DNA involves the separation of DNA fragments based on size.

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

• Bob

• Sue

• John

• Lisa

Answer explanation

John's blood was found in the blood stain at the crime scene.

Which suspect is likely guilty?

• Suspect #1

• Suspect #2

• Suspect #3

Answer explanation

Suspect #2 is likely guilty because they are the correct answer choice.

Which two bat species are most closely related?

•  Bat 1 and Bat 2

• Bat 1 and Bat 3

• Bat 2 and Bat 3

• There’s no way to tell

Answer explanation

Bat 1 and Bat 3 are the most closely related bat species. They share the same correct answer choice.

Tags

NGSS.MS-LS4-2

The parents of a new baby believe they brought the wrong child home from the hospital. Gel electrophoresis was performed using DNA samples from the parents and the child. A section of the gel

electrophoresis results is shown below. Which conclusion is valid based on the gel electrophoresis results?

• They have the correct child, because her genetic information is identical to that of the father.

  
  

• They have the wrong child, because her genetic information does not match that of either parent.

• They have the correct child, because her genetic information came from both parents.

  
  

• They have the wrong child, because her genetic information matches only that of the mother.

Answer explanation

The correct conclusion is that they have the correct child, as her genetic information came from both parents.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which male is the father of the child?

• Male 1

• Male 2

Answer explanation

Male 1 is the father of the child because he is the correct choice among Male 1 and Male 2.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

• Suspect A

• Suspect C

• Suspect D

• Suspect B

Answer explanation

The DNA analysis links Suspect C to the crime scene, indicating their involvement in the crime.

Which suspect matches that of the crime scene DNA?

• 1

• 2

• 3

• 4

Answer explanation

Suspect 2 matches the crime scene DNA.

Tags

NGSS.HS-LS3-2

Which man is the actual father of the child?

• "Dad" 1

• "Dad" 2

• "Dad" 3

Answer explanation

The actual father of the child is 'Dad' 3. This choice is correct because it matches the correct answer.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2