Question
Color of dried semen becomes yellow to brown. Dried semen stain in clothes is identified by:
| A. |
UV light |
| B. |
Spectroscopy |
| C. |
Magnifying lens |
| D. |
Infrared |
Show Answer
|
Correct Answer � A Explanation |
 |
When dried semen is examined under filtered ultraviolet light, they show a fluorescence of a bluish-white colour, which is not specific as other albuminous materials such as nasal, leucorrhoeal discharges and detergents also fluoresce.
Fluorescence depends on choline of semen.
Ref: The Essentials of Forensic Medicine and Toxicology, 27th edition, Page 369.