Forensic DNA

Which suspect is likely guilty?

• Suspect #1

• Suspect #2

• Suspect #3

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 

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

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

• Suspect A

• Suspect C

• Suspect D

• Suspect B

Who invented the process of DNA fingerprinting?

• Jeffreys

• Dawson

• Roseland

• Crick

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

Which is the primary purpose of using restriction enzymes in gel electrophoresis?

• It allows the strands of DNA to be cut into various lengths for testing

• It restricts the number of base pairs that can be tested in a sample

• It makes the testing simpler by moving the strands into the gel faster

• It charges the DNA strands

Once DNA has been extracted from the nucleus of a cell, it is exposed to ______ ______ that act like biochemical scissors to cut the DNA.

• restriction enzymes

• gel agarose

• clotting factors

• electric shock

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.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following best describes a DNA molecule?

• double helix

• contains ribose

• made of amino acids

• contains Uracil

Tags

NGSS.HS-LS1-1