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.
1. Consent. If the person who is in control of the property consents to the search without being coerced or tricked into doing so, a search without a warrant is valid. Note that police do not have to tell you that you have the right to refuse a search, but you do. Also, note that if you have a roommate, he or she can consent to a search of the common areas of your dwelling (kitchen, living room), but not to your private areas (bedroom, for instance). On the other hand, the Supreme Court recently ruled that one spouse cannot consent to the search of a house on behalf of the other.