DNA+fingerprinting+Hw+MD

Multiple Choice

11: C 12: A 13: A 14: C 15: D

16. - to take a ridge fount, an imaginary line is drawn from the center to the core to the edge of the delta

17. - a fingerprint is an impression on the skin that is unique to each and every individual in the world and can be used to solve crimes.

18. - the creation of fingerprints happens in the basal layer, a special layer within the epidermis where new skin cells re produced. In a fetus, this layer grows faster than the epidermis on the outside. Since it grows faster it folds in different directions and it cannot be destroyed by and skin injuries.

19. - no fingerprints can not be changed/hidden. The pattern cannot be altered or destroyed permanently by skin injuries because the outer layer protects it.

20 - Ninhydrin reacts with amino acids found in sweat Cyanoacrylate - reacts with amino acids Silver Nitrate - reacts with chloride from salt in perspiration on the print combines with silver nitrate to form silver chloride Lodine Fuming - reacts with lodine combine with carbohydrates in latent print.