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.
These remains can be interred according. to the familyâs traditions. This may help with the healing and. adjustment to their terrible loss. For others, the testing pro-. cess may interfere with their healing. For DNA testing to work, it may be necessary to gather more. information, samples, or personal items. Gathering these. may cause your family further distress. If the testing does not. identify your loved oneâs remains, it may be a disappoint-.