Forensic Science Mid Term Review

Multiple Choice

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

Open Ended

Explain the pathway of blood circulation in the human body.

Fill in the Blanks

Fill in the Blanks

Multiple Choice

Serology is the study of the follow items below except one. Choose the item that is not studied under serology.

• saliva

• epidural

• semen

• urine

Multiple Choice

In the diagram strand I and II represent portions of DNA molecule. Strand II would normally include ...

• AGC
• TCG
• TAC
• GAT

Multiple Choice

If a father is AA and a mother is AB is it possible for them to have a child that is heterozygous for Type A?

• no

• yes

Multiple Choice

The second part of Locard's Principle states that the ____.

• postmortem interval plays a role in the cross-transfer of evidence from one entity to another

• trace evidence from a crime scene provides a timeframe as to when the exchange occurred

• exchanges of trace evidence are always useful for detectives in crime investigation

• intensity, duration, and nature of the entities in contact determine the extent of the transfer

Multiple Choice

It is important to separate witnesses as soon as possible because...

• Witnesses may run away or disappear

• to prevent witnesses from creating a story or altering their memory when talking to each other

• It is the law to arrest witnesses until the entire investigation is complete

• none of the above

Fill in the Blanks

Multiple Choice

On a rough sketch like this, what should be included?

• have true north labeled on the sketch

• it should have measurements

• It should be drawn with accurate measurements included

• none of these

Multiple Choice

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

Multiple Choice

A newborn with type O blood has been kidnapped from the hospital. The kidnapper who is type A stated she gave birth to the baby, while another mother has come forward to claim the child. She is also type A but heterozygous. Which one is more likely to be the parent of the newborn?

• the mother with type A heterozygous blood

• someone else

• neither mother

• The mother with type A homozygous dominant blood

Multiple Choice

A _________ is DNA tightly coiled around proteins.

• gene

• chromosome

• trait

• mutation

Multiple Choice

In forensic science, which type of evidence cannot yield DNA?

• hair

• blood

• shoe print

• saliva

Multiple Choice

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

Open Ended

Genotype is the combination of

Categorize

Options (6)

Type of gene (letters)

Physical expression of a gene

BB, Bb, bb

Brown eyes or blue eyes

HH, Hh, hh

Horns and no horns

Organize these options into the right categories

Genotype

Phenotype

Fill in the Blanks

Multiple Select

What factors can affect DNA evidence?

• Sunlight and dust

• Temperature and humidity

• Time and pressure

• None of these affect DNA evidence

Multiple Choice

When arriving on a scene, what is the first thing the first responder should do?

• Separate the scene

• Secure the scene

• Scan the scene

• Sketch the scene

Fill in the Blanks

Multiple Choice

Why should a CSI wear personal protective equipment when working at a crime scene?

• It safeguards the CSI from pathogens in the suspect's bodily fluids.

• It safeguards the CSI from pathogens in the victim's bodily fluids.

• It prevents contamination of the evidence by the CSI.

• All of the answers are correct.

Multiple Choice

DNA evidence was collected from a crime scene. Compare the DNA evidence from the scene and determine who committed the crime.

• suspect 1

• suspect 2

• suspect 3

• All of them are possible suspects

Multiple Choice

Type A blood contains ___

• A antibodies and B antigen

• B antigens and A Antigens

• A antigens and B antibodies

• A antibodies and B Antigen

Multiple Choice

Lower power has a larger _________ so you see ________ organism/objects.

• Field of view /  less

• Microscope / bigger

• Field of view /  more 

• Ocular / more

Multiple Choice

Observe the picture below. Which mode of inheritance is responsible for the pattern of the cow in the picture below?

• The Law of Dominance

• Incomplete dominance

• Codominance

• sex linked

Multiple Choice

Nucleotides are made up of a sugar, phosphate, and..?

• nitrogenous base
• nucleic acid
• cholesterol
• fatty acid