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 NSA is allowed to record the conversations of non-Americans without a specific warrant for each person monitored, if at least one end of the conversation is outside of the U.S. It is also allowed to record the communications of Americans if they are outside the U.S. and the NSA first gets a warrant for each case.