An example of a polygenic trait is human skin color variation. Several genes factor into determining a person's natural skin color, so modifying only one of those genes can change skin color slightly or in some cases, such as for SLC24A5, moderately.
Case 1 â The Alleged Father has Recently Passed Away. If less than a week has passed since the deceased died, then if permission can be obtained, fingernail cuttings and a hair sample with root attached can be used to extract DNA samples to establish paternity. It is a more complex procedure than a buccal swab, but the DNA matching is just as accurate.
The Supreme Court on Wednesday said narco-analysis, polygraph and brain-mapping tests cannot be conducted on an accused or a suspect without their consent. These tests, which are often used as aid during investigations by probe agencies, are different from each other, but are all aimed at collecting vital information.n brain-mapping, sensors are attached to the suspect's head and he or she is made to sit in front of a computer screen. The suspect is then made to see images or hear sounds.