Question 1 at most crime scenes, investigators will only be able to recover partial fingerprints. true false question 2 on average, there are about 10 ridge characteristics in a fingerprint. true false question 3 all fingerprints are invisible to the naked eye. true false question 4 a precipitin test is used to distinguish between animal and human blood. true false

1. False

The fingerprints are special impressions of the fingers when they come in contact with a surface or object. The crime scene investigators are able to locate and collect both partial and complete prints to use them as a potent physical evidence.

2. True

On an average 10 ridge characteristics or minutae characteristics are sufficient to establish the identity of a person. The pattern of ridge differ from finger to finger in an individual as well as varies from person to person.

3. False

Fingerprints can be classified as latent, patent and plastic prints. Latent prints are invisible and cannot be observed from the naked eyes. Patent prints are easily observable prints these are formed by blood,oil and ink on the surface. Plastic prints are formed on soft surfaces like cheese, butter and paints, these are observed by naked eye.

Answer 4. True

Precipitin test is an immunological test in which the antisera of typical organism is chosen to react with the antibody present in the sample. If the antibody is of the same origin that of the antisera then precipitate is formed indicating the sample of the same origin.