Fingerprinting+Questions+AF

1. D 2. A 3. A 4. C 5. D 6.Describe how to take a ridge count from a fingerprint. To take a ridge count, an imaginary line is drawn from the center of the core to the edge of the delta. 7.Write a brief definition of the tern fingerprint. All humans have their own unique pattern on their hands. In the mid-1800s fingerprint’s uniqueness was studied and then used as an identification system. Fingerprints consist of several main ridge patterns, including whorls, loops, and arches. 8. Describe how fingerprints are formed. Fingerprints are formed in the womb at about week 10 of gestation. They are formed between two layers of skin. 9. No it is not possible to alter your own fingerprints. Many people have tired to cover up or get rid of their fingerprints by burning it off. However, they always grow back the exact same way. 10. Another way to make prints visible is to apply certain chemicals. What aspect of a fingerprint chemically reacts with each of the following? a. Ninhydrin- Ninhydrin reacts with amino acids found in sweat. b. Cyanoacrylate- Cyanoacrylate reacts with amino acids. c. Silver nitrate-Silver nitrate reacts with chloride from salt in perspiration. d. Iodine fuming-Iodine fuming reacts with the iodine that combines with carbohydrates in latent print.