A victim’s remains are found near a house. The family believes it is their cousin Tallulah but the body has been burned so badly that she cannot be identified. What is the BEST option for a forensic scientist to identify the body using DNA evidence?
A.
Ask for one of Tallulah’s old hairbrushes.
B.
Obtain a buccal swab from Tallulah’s body.
C.
Test the family members’ saliva and sweat.
D.
Look for gunpowder residue around the body.
A. Ask for one of Tallulah's old hairbrushes.
Two different people had their DNA tested because they were suspects in an investigation. The results came back stating that their DNA was exactly the same. What can MOST likely be concluded based on these results?
A.
The suspects must be identical twins.
B.
The suspects are brother and sister.
C.
A mistake was made because this is impossible.
D.
The suspects are mother and daughter.
A. The suspects must be identical twins.
Forensic scientists are using DNA typing. What are they MOST likely trying to accomplish?
A.
They are trying to write a document about DNA matches from CODIS.
B.
They are trying to distinguish one person’s DNA from another.
C.
They are trying to make a bond between two strands of DNA.
D.
They are trying to cut a strand of DNA into smaller fragments.
B. They are trying to distinguish one person's DNA from another.
Jimmy doesn’t understand the relationship between genes, chromosomes, and DNA. How would a scientist BEST explain these relationships?
A.
DNA makes up genes; genes are found on chromosomes.
B.
Genes make up DNA; chromosomes are found on genes.
C.
Chromosomes make up DNA; genes are found on DNA.
D.
DNA makes up chromosomes; chromosomes are found on genes.