Whenever two objects come into contact with each other, there is always a transfer of material. This concept is known as

the law of circumstantial facts

The reason it is important to separate the witnesses at a crime scene is to

to prevent the witnesses from talking to each other

to prevent contamination of the evidence

to prevent fighting among the witnesses

to protect them from the perpetrator

administering a double blind line-up in which the administrator does not know the identify of the suspect and the witness is told this information.

presenting line-up members to the witness simultaneously.

circling the picture of the most likely suspect on a series of line-up photos.

non-suspect fillers should vary from each other and the suspect to include a wide variety of ethnicities.

using luminol spray in a dark room.

Dusting with fine carbon powder

Making a cast with mikrosil or silicone.

Bite mark evidence can only be analyzed when the skin is unbroken.

There is no evidence to prove that tooth dentition patterns are unique for each person.

Bite marks made by the same person cannot consistently be reproduced on different people.

Bite marks on the skin can easily be confused with other types of marks from injuries that are left on the body.

the Ted Bundy serial killings case.

the Atlanta child murders case.

the Dr. Swango mysterious patient deaths case.

You cannot determine the direction of travel based on this image.

Some droplets were travelling to the right and some to the left.

A to A, C to C, G to G, and T to T

The pooling of the blood in the lowest points of the body, giving the skin a purplish-red discoloration.

The change in body temperature post mortem, until the ambient temperature is matched.

The stiffening of the joints and muscles of a body a few hours after death, usually lasting from one to four days.

An after-death paleness that occurs in those with light/white skin.