The concepts elaborated above can be taken to a further level. Basically, the premise is "closer relatives share more genetic markers". DNA testing specialists have developed tests that employ different sets of genetic markers to assess specific degrees of relationships. For example, certain set of markers will be useful to establish fatherhood or motherhood and different sets are used to test for grandparents, siblings and so on.
Sibling testing
We often hear stories about families being broken up and kids given out in adoption. Some of these children try later in life to find their long lost relatives. Although siblings tend to look alike, physical resemblance is not always obvious, and sibling DNA testing comes to help when people want to confirm that they have found a lost sister or brother. DNA testing companies offer easy tests to confirm or discard sibling relationship.
Twin siblings
The twin DNA test is a specific case. Twin siblings can be either identical or fraternal twins. Sometimes it is easy to tell if they are fraternal twins because they don't look especially similar, but sometimes it is not so obvious. If the sibling or their parents really want to know whether they are identical twins or not, a specific test is available. This one simply tests whether the genetic composition of the siblings is identical or not and quickly tells which is the case.
Subscribe to:
Post Comments (Atom)
Posts
No comments:
Post a Comment