Why Short Tandem Repeat (STR) Testing Is Superior To Autosomal DNA Testing
Higher Accuracy and Specificity – STR testing focuses on analyzing specific genetic markers that are inherited from both parents. As siblings inherit half of their genetic makeup from each parent, STR testing can detect similarities in the repeat patterns, offering a more accurate analysis of sibling relationships.
Discriminatory Power – STR markers have a higher discriminatory power compared to autosomal DNA testing. The vast number of STR markers available ensures that even distant relatives can be accurately identified, reducing the chances of false results and enhancing the reliability of sibling DNA testing.
Elimination of Parental DNA Influence – Autosomal DNA testing relies on the comparison of the test-taker’s DNA with that of both of their parents. STR testing bypasses this limitation, providing a direct comparison between siblings without the need for both the mother and father’s DNA.
Wider Applicability – STR testing is not only suitable for verifying full siblings but can also be employed to determine half-sibling relationships, making it a versatile and comprehensive tool for familial DNA testing.
Consistency in Testing – Due to its precise targeting of genetic markers, STR testing yields consistent and replicable results. This makes it an ideal choice for legal and court-admissible cases, where accuracy and reliability are of utmost importance.
